CN201145063Y - Large-capacity four-way reversing valve - Google Patents
Large-capacity four-way reversing valve Download PDFInfo
- Publication number
- CN201145063Y CN201145063Y CNU2008200822383U CN200820082238U CN201145063Y CN 201145063 Y CN201145063 Y CN 201145063Y CN U2008200822383 U CNU2008200822383 U CN U2008200822383U CN 200820082238 U CN200820082238 U CN 200820082238U CN 201145063 Y CN201145063 Y CN 201145063Y
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- valve
- way change
- gas appliance
- venting gas
- big capacity
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Abstract
A large-capacity four-way change valve belongs to a valve capable of changing the flow direction of a refrigeration working medium in a refrigeration system. The prior large-capacity four-way change valve has the faults of inconvenient maintenance, high maintenance cost, and environmental pollution easily caused by discharged refrigerant. The large-capacity four-way change valve is characterized in that: a valve is arranged on an air exhausting pipe connecting a pilot valve and cavities on both sides of a main valve; an exhausting device capable of being turned off is arranged between the valve and the cavities on both sides of the main valve; during normal operation, the valve is in an open status and the exhausting device is in a closed status. The large-capacity four-way change valve has a simple maintenance, low maintenance cost and environmental pollution reduction.
Description
Technical field
The utility model belongs to the valve that changes the refrigeration working medium flow direction in a kind of refrigeration system, and is especially relevant with a kind of big capacity four-way change-over valve.
Background technique
Big capacity four-way change-over valve generally is applied in the heat pump type air conditioner, common big capacity piston type four-way change-over valve is made up of pilot valve and main valve, main valve comprises valve body, be positioned at the piston of valve body and be arranged at two end caps at valve body two ends, the valve body of main valve, piston and end cap are formed left and right two cavitys, pilot valve generally comprises a selector valve and solenoid electric valve is formed, and selector valve is communicated with cavity in the main valve by air pipe respectively.Big capacity four-way valve like this can cause system can not set up enough pressure differences when the piston of the selector valve in the pilot valve is in bypass position when breaking down, and the piston that can't promote pilot valve and main valve is got back to the normal position, and whole refrigeration system can not be worked.As keeping in repair, will reclaim or emptying system in refrigeration agent, again four-way valve is opened piston is pushed over the position that needs, the refrigeration agent of annotating again at last, maintenance is trouble quite, the maintenance cost costliness, the refrigeration agent of discharge pollutes the environment again.
The model utility content
The technical assignment of the technical problems to be solved in the utility model and proposition is exactly the defective of the easy befouling environment of refrigeration agent of discharging in the time of will overcoming maintenance trouble that the big capacity four-way change-over valve of tradition exists, maintenance cost height, maintenance, provide a kind of easy to maintenance, maintenance cost low and can reduce the big capacity four-way change-over valve of environmental pollution.For this reason, the utility model is by the following technical solutions:
Big capacity four-way change-over valve, form by main valve and pilot valve, main valve comprises valve body, be arranged at the piston in the valve body and be arranged at two end caps at valve body two ends, the valve body of main valve, piston and end cap are formed left and right two cavitys, pilot valve is communicated with the cavity of main valve by air pipe, it is characterized in that: on described air pipe, be respectively arranged with valve, can be used to close the gas exchange between pilot valve and the main valve cavity; Between described valve and described main valve cavity, be provided with the venting gas appliance that at least one can be closed; Valve is in open mode during proper functioning, and venting gas appliance is in closed condition.
The utility model working principle is: when pilot valve breaks down state, cause system can not set up enough pressure differences, the piston that can't promote pilot valve and main valve is got back to the normal position, if as required, should make main valve piston move to the position in left side, then close the valve of left side air pipe earlier, cut-out transfers to the passage of main valve left side cavity from pilot valve, again by left side venting gas appliance exhaust, the pressure of main valve left side cavity will reduce, at this moment, two steel balls of main valve piston inside will be run to the left side, the passage that leads to the left side cavity of sealing main valve piston inside, opened the passage that the right side cavity is led in main valve piston inside, make the pressurized gas input main valve right side cavity of refrigeration system, so, the pilot valve chamber pressure that makes main valve right side cavity and be communicated with main valve right side cavity increases, produce pressure difference, make the piston of main valve and pilot valve move on to specified position in the effect downslide of pressure, thereby reach the purpose that manual reverse of direction is fixed a breakdown, open valve after fixing a breakdown and to make refrigeration system recover proper functioning again.Otherwise, main valve piston be moved right, also be same principle.
As the further of technique scheme improved and replenish, the utility model also comprises following additional technical feature:
The pattern of described pilot valve is the piston type electromagnetic valve.
The pattern of described pilot valve can also be sliding bowl formula solenoid valve.
Described valve is a ball valve.
Described valve can also be an angle valve.
Described venting gas appliance is a needle-valve.
Described venting gas appliance can also be a ball valve.
Part between described valve of described conduit and the valve body is provided with a described venting gas appliance.
Described each main valve end cap is provided with a described venting gas appliance.
Described venting gas appliance and described valve can be connected as a single entity.
Use the utility model can reach following beneficial effect: to reduce maintenance difficulty and workload, increase work efficiency, can also save in a large number, reduce the pollution of refrigeration agent to environment because the loss of refrigerant that maintenance is produced reduces maintenance cost.
Description of drawings
Fig. 1 is the partial sectional view of the big capacity four-way change-over valve of the utility model plan view.
Fig. 2 is the left view of the big capacity four-way change-over valve of the utility model.
Fig. 3 is the plan view of the big capacity four-way change-over valve of the utility model when using another kind of pilot valve.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in detail.
As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, the utility model is made up of main valve 2 and pilot valve 1, main valve 2 comprises valve body 11, be arranged at the piston 12 in the valve body 11 and be arranged at two end caps 7 and 9 at valve body two ends, the valve body 11 of main valve 2, piston 12 and end cap 7 are formed cavity 13, the valve body 11 of main valve 2, piston 12 and end cap 9 are formed cavity 14, pilot valve 1 is communicated with cavity 13 by air pipe 3, pilot valve 1 is communicated with cavity 14 by air pipe 6, air pipe 3 is provided with valve 4, can be used to close the gas exchange between pilot valve 1 and the cavity 13, end cap 7 is provided with the venting gas appliance that can close 8, air pipe 6 is provided with valve 5, can be used to close the gas exchange between pilot valve 1 and the cavity 14, end cap 9 is provided with the venting gas appliance that can close 10; Valve 4 and 5 is a ball valve, and venting gas appliance 8 and 10 is a needle-valve, and ball valve is in open mode during proper functioning, and needle-valve is in closed condition.
As to the replenishing of above-mentioned mode of execution, venting gas appliance 8 and 10 can also be a small ball; Venting gas appliance 8 can also be arranged at air pipe 3 on the part between valve 4 and the valve body 11, and venting gas appliance 10 can also be arranged at air pipe 6 on the part between valve 5 and the valve body 11; Venting gas appliance 8 and valve 4 can be connected as a single entity, and venting gas appliance 10 and valve 5 can be connected as a single entity; Valve 4 and 5 can also be an angle valve.
The pattern of the utility model pilot valve can have multiple choices, as shown in Figure 1 be the piston type electromagnetic valve for the pilot valve pattern time big capacity four-way change-over valve, the big capacity four-way change-over valve during for sliding bowl formula solenoid valve as shown in Figure 3 for the pilot valve pattern.
When pilot valve 1 breaks down state, cause system can not set up enough pressure differences, the piston that can't promote pilot valve and main valve is got back to the normal position, if as required, should make piston 12 move to the position in left side, then first throttle down 4, cut-out transfers to the passage of cavity 13 from pilot valve 1, again by venting gas appliance 8 exhausts, the pressure of cavity 13 will reduce, at this moment, two steel balls of piston 12 inside will be run to left side, the passage that leads to cavity 13 of closed piston 12 inside, opened the passage that cavity 14 is led in piston 12 inside, make the pressurized gas input cavity 14 of refrigeration system, so, the pilot valve chamber pressure increase that makes cavity 14 and be communicated with cavity 14, produce pressure difference, make the piston of main valve and pilot valve move on to specified position, thereby reach the purpose that manual reverse of direction is fixed a breakdown, open valve 4 after fixing a breakdown and to make refrigeration system recover proper functioning again in the effect downslide of pressure.Otherwise, piston 12 be moved right, also be same principle.
Claims (10)
1, big capacity four-way change-over valve, form by main valve (2) and pilot valve (1), main valve (2) comprises valve body (11), be arranged at the piston (12) in the valve body (11) and be arranged at end cap (7) and (9) at valve body (11) two ends, the valve body (11) of main valve (2), piston (12) and end cap (7) are formed cavity (13), the valve body (11) of main valve (2), piston (12) and end cap (9) are formed cavity (14), pilot valve (1) is communicated with cavity (13) by air pipe (3), pilot valve (1) is communicated with cavity (14) by air pipe (6), it is characterized in that: described air pipe (3) is provided with valve (4), and described air pipe (6) is provided with valve (5); Between described valve (4) and described cavity (13), be provided with at least one venting gas appliance that can close (8), between described valve (5) and described cavity (14), be provided with at least one venting gas appliance that can close (10).
2, big capacity four-way change-over valve according to claim 1 is characterized in that: described valve (4) and (5) are ball valve.
3, big capacity four-way change-over valve according to claim 1 is characterized in that: described valve (4) and (5) are angle valve.
4, big capacity four-way change-over valve according to claim 1 is characterized in that: described venting gas appliance (8) and (10) are needle-valve.
5, big capacity four-way change-over valve according to claim 1 is characterized in that: described venting gas appliance (8) and (10) are ball valve.
6, according to claim 4 or 5 described big capacity four-way change-over valves, it is characterized in that: the part that described conduit (3) is positioned between described valve (4) and the valve body (11) is provided with a described venting gas appliance (8), and the part that described conduit (6) is positioned between described valve (5) and the valve body (11) is provided with a described venting gas appliance (10).
7, according to claim 4 or 5 described big capacity four-way change-over valves, it is characterized in that: described venting gas appliance (8) can also be arranged on the described end cap (7), and described venting gas appliance (10) can also be arranged on the described end cap (9).
8, according to claim 4 or 5 described big capacity four-way change-over valves, it is characterized in that: described venting gas appliance (8) and described valve (4) can be connected as a single entity, and described venting gas appliance (10) and described valve (5) can be connected as a single entity.
9, big capacity four-way change-over valve according to claim 1, it is characterized in that: the pattern of described pilot valve (1) is the piston type electromagnetic valve.
10, big capacity four-way change-over valve according to claim 1 is characterized in that: the pattern of described pilot valve (1) can also be the piston type electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200822383U CN201145063Y (en) | 2008-01-09 | 2008-01-09 | Large-capacity four-way reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200822383U CN201145063Y (en) | 2008-01-09 | 2008-01-09 | Large-capacity four-way reversing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201145063Y true CN201145063Y (en) | 2008-11-05 |
Family
ID=40081940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200822383U Expired - Fee Related CN201145063Y (en) | 2008-01-09 | 2008-01-09 | Large-capacity four-way reversing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201145063Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121390A (en) * | 2013-04-28 | 2014-10-29 | 浙江盾安机械有限公司 | Four-way valve |
-
2008
- 2008-01-09 CN CNU2008200822383U patent/CN201145063Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121390A (en) * | 2013-04-28 | 2014-10-29 | 浙江盾安机械有限公司 | Four-way valve |
| CN104121390B (en) * | 2013-04-28 | 2018-05-15 | 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081105 Termination date: 20130109 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |