CN210088093U - Electromagnetic valve with pressure protection function and vehicle-mounted air conditioner - Google Patents
Electromagnetic valve with pressure protection function and vehicle-mounted air conditioner Download PDFInfo
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- CN210088093U CN210088093U CN201920749917.XU CN201920749917U CN210088093U CN 210088093 U CN210088093 U CN 210088093U CN 201920749917 U CN201920749917 U CN 201920749917U CN 210088093 U CN210088093 U CN 210088093U
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- flow path
- pressure protection
- solenoid valve
- bypass flow
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Abstract
The utility model provides a take pressure protection's solenoid valve and on-vehicle air conditioner relates to the air conditioner field. A solenoid valve with pressure protection comprises a valve body and a pressure protection device. The valve body comprises an inlet end and an outlet end, the solenoid valve with pressure protection further comprises a straight-through flow path and a bypass flow path which are mutually independent, and the straight-through flow path and the bypass flow path are both used for communicating the inlet end and the outlet end. The pressure protection device is arranged in the valve body and used for conducting/cutting off the bypass flow path. The pressure protection device is configured to open under pressure to communicate the bypass flow path when the straight-through flow path is interrupted and a pressure differential between the inlet end and the outlet end is greater than a predetermined threshold. Adopt the utility model provides a solenoid valve can avoid the solenoid valve under the condition that damages or logic became invalid, and the refrigerant can not lead to the compressor to damage through the solenoid valve, has improved the life of compressor, has further improved vehicle-mounted air conditioner's life.
Description
Technical Field
The utility model relates to an air conditioner field especially relates to a take solenoid valve and on-vehicle air conditioner of pressure protection.
Background
With the increasing popularization of air conditioning technology, the air conditioning function gradually develops towards multifunction and diversification, an air conditioning system is not limited to a single refrigerant circulation loop, and a plurality of refrigerant circulation loops are controlled to be on and off through electromagnetic valves. The traditional electromagnetic valve only has an on-off function, when a plurality of refrigerant loops are closed simultaneously, if the compressor still runs, the system can be caused to have no refrigerant and lubricating oil circulation, and further faults such as compressor damage, overhigh or overlow system pressure, air conditioning system failure and the like can be caused. A common solution in the industry is to adopt a normally open solenoid valve for a loop, but if the solenoid valve is damaged or logic control fails, the problem cannot be completely solved.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an object of first aspect is to provide a take pressure protection's solenoid valve, has solved when the solenoid valve damages or logic became invalid the refrigerant can not lead to the problem of compressor damage through the solenoid valve.
The utility model discloses the further purpose of first aspect is to improve the leakproofness of solenoid valve.
The utility model discloses the purpose of second aspect provides an on-vehicle air conditioner.
According to the utility model discloses an aspect, the utility model provides a take pressure protection's solenoid valve, include:
a valve body including an inlet end and an outlet end;
the mutually independent straight-through flow path and the mutually independent bypass flow path are both used for communicating the inlet end with the outlet end;
a pressure protection device arranged in the valve body and used for conducting/cutting off the bypass flow path;
the pressure protection device is configured to open under pressure to open the bypass flow path when the straight-through flow path is interrupted and a pressure differential between the inlet end and the outlet end is greater than a preset threshold.
Optionally, the pressure protection device comprises:
the elastic piece is provided with two opposite ends, and one end of the elastic piece is connected with the valve body;
and the valve plate is connected with one end of the elastic piece, which is far away from the valve body, and is used for moving along with the elastic deformation of the elastic piece so as to conduct and/or cut off the bypass flow path.
Optionally, the pressure protection device is arranged at the bottom of the valve body, the upper end of the elastic piece is connected with the valve plate, the lower end of the elastic piece is connected with the bottom of the valve body, so that the elastic piece drives the valve plate to move towards the bottom of the valve body when undergoing downward elastic deformation to conduct the bypass flow path, and drives the valve plate to move upwards to block the bypass flow path when undergoing upward elastic deformation.
Optionally, the bypass flow path further includes a partition disposed between the inlet end and the outlet end, the partition is in sealing contact with the valve plate when the valve plate moves upward to block the bypass flow path, and the partition is spaced from the valve plate when the valve plate moves downward to communicate with the bypass flow path.
Optionally, one side of the valve plate facing the partition member is provided with a first sealing member, so that the first sealing member is in sealing contact with the partition member when the valve plate moves upwards.
Optionally, the preset threshold is a pretightening force of the elastic member.
Optionally, an accommodating cavity is formed in the bottom of the valve body, the accommodating cavity is provided with a bottom opening, and the pressure protection device is arranged in the accommodating cavity;
the electromagnetic valve also comprises a bottom cover used for blocking the bottom opening of the accommodating cavity and used for limiting the pressure protection device in the accommodating cavity.
Optionally, a second sealing element is arranged between the valve plate and the accommodating cavity.
Optionally, the method further comprises:
and the valve cover is arranged at the top of the valve body, and a valve core for conducting/cutting off the straight-through flow path is arranged in the valve cover.
According to the utility model discloses a second aspect, the utility model also provides a vehicle air conditioner, vehicle air conditioner installs the solenoid valve.
The utility model discloses well valve body includes entrance point and exit end, still includes the straight-through flow path and the bypass flow path that all are used for intercommunication entrance point and exit end of mutual independence in the valve body, still is provided with the pressure protection device who is used for switching on/cutting the bypass flow path in the valve body. The pressure protection device is configured to open under pressure to communicate the bypass flow path when the straight-through flow path is interrupted and a pressure differential between the inlet end and the outlet end is greater than a predetermined threshold. Adopt the utility model provides a solenoid valve can avoid the solenoid valve under the condition that damages or logic became invalid, and the refrigerant can not lead to the compressor to damage through the solenoid valve, has improved the life of compressor, has further improved vehicle-mounted air conditioner's life.
The utility model discloses bottom at the valve body sets up pressure protection device, and pressure protection device includes elastic component and valve block, has increased first sealing member and second sealing member on the valve block, has further improved the leakproofness of solenoid valve.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic block diagram of a solenoid valve with pressure protection according to an embodiment of the present invention;
fig. 2 is a schematic flow diagram of a straight through flow path of a solenoid valve with pressure protection according to an embodiment of the present invention;
fig. 3 is a schematic flow diagram of a bypass flow path of a solenoid valve with pressure protection according to an embodiment of the present invention;
fig. 4 is a schematic partial enlarged view of a pressure protection device in the solenoid valve with pressure protection shown in fig. 1.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "left", "right", "bottom", "top", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention.
Fig. 1 is a schematic structural diagram of a solenoid valve with pressure protection according to an embodiment of the present invention, fig. 2 is a schematic flow diagram of a straight flow path of a solenoid valve with pressure protection according to an embodiment of the present invention, and fig. 3 is a schematic flow diagram of a bypass flow path of a solenoid valve with pressure protection according to an embodiment of the present invention. The direction of the solid line arrows in fig. 2 indicates the flow of the through flow path, and the direction of the broken line arrows in fig. 3 indicates the flow of the bypass flow path. As shown in fig. 1-3, in one particular embodiment, a pressure protected solenoid valve 100 includes a valve body 1 and a pressure protection device 3. The valve body 1 includes an inlet end 12 and an outlet end 11, and the solenoid valve 100 with pressure protection further includes a through flow path and a bypass flow path which are independent of each other, and both the through flow path and the bypass flow path are used for communicating the inlet end 12 and the outlet end 11. The pressure protection device 3 is provided in the valve body 1 for opening/closing the bypass flow path. The pressure protection device 3 is configured such that when the through flow path is interrupted and the pressure difference between the inlet end 12 and the outlet end 11 is greater than a preset threshold value, the pressure protection device 3 opens under pressure to conduct the bypass flow path.
The utility model discloses when the solenoid valve was closed, direct flow path cut for the liquid/gas of entrance point 12 can not flow into exit end 11, and when pressure differential between entrance point 12 and exit end 11 was greater than the predetermined threshold value, the liquid/gas of entrance point 12 can enter into exit end 11 through the bypass flow path. Adopt the utility model discloses a take solenoid valve 100 of pressure protection can avoid the solenoid valve under the condition that damages or logic became invalid, and the refrigerant can not lead to the compressor to damage through the solenoid valve, has improved the life of compressor, has further improved the life of on-vehicle air conditioner.
In another embodiment, the pressure protection device 3 comprises an elastic member 31 and a valve plate 32. The elastic member 31 may be a spring. The elastic member 31 has opposite ends, one end of which is connected to the valve body 1, and the valve sheet 32 is connected to an end of the elastic member 31 away from the valve body 1, and is configured to move along with the elastic deformation of the elastic member 31, so as to open and/or block the bypass flow path.
The utility model discloses pressure protection device 3 uses mechanical device, the stable function, and simple structure and cost are lower, have solved the problem of using the easy inefficacy of electron.
Further, the pressure protection device 3 is disposed at the bottom of the valve body 1, the upper end of the elastic member 31 is connected to the valve sheet 32, and the lower end of the elastic member 31 is connected to the bottom of the valve body 1, so as to drive the valve sheet 32 to move toward the bottom of the valve body 1 to open the bypass flow path when the elastic member 31 is elastically deformed downward, and drive the valve sheet 32 to move upward to block the bypass flow path when the elastic member 31 is elastically deformed upward. The bypass flow path further includes a blocking member disposed between the inlet end 12 and the outlet end 11, and sealingly contacts the blocking member 13 to block the bypass flow path when the valve sheet 32 moves upward, and is spaced apart from the blocking member 13 to communicate with the bypass flow path when the valve sheet 32 moves downward. The pressure protection device is arranged at the bottom of the valve body, so that the gravity action is considered, and the pressure protection device is easy to open.
Specifically, a side of the valve sheet 32 facing the elastic member 31 is provided with a first seal 34 so that the first seal 34 is in sealing contact with the partition 13 when the valve sheet 32 moves upward. With the first seal 34, a better sealing of the bypass flow path is possible when it is not required.
Fig. 4 is a schematic partial enlarged view of a pressure protection device in the solenoid valve with pressure protection shown in fig. 1. As shown in fig. 4 and see fig. 1. The pressure at the inlet end 12 of the solenoid valve 100 with pressure protection is F1, the pressure at the outlet end 11 of the solenoid valve 100 with pressure protection is F2, and the preset threshold is the pre-tightening force F3 of the elastic element 31. When F1+ F2 > F3, liquid/gas enters the outlet end 11 from the inlet end 12. As shown in fig. 3, the liquid/gas flows from the inlet end 12 on the right and then from above the pressure protection device 3 to the outlet end 11 on the left. The opening pressure of the pressure protection device 3 can be achieved by adjusting the pretension of the elastic element 31. The liquid may be a refrigerant, a lubricating oil, or the like.
In addition, the bottom of the valve body 1 is provided with a containing cavity 14, the containing cavity 14 has a bottom opening, the pressure protection device 3 is arranged in the containing cavity 14, and the electromagnetic valve 100 further comprises a bottom cover 33 for blocking the bottom opening of the containing cavity 14 and limiting the pressure protection device 3 in the containing cavity 14. The solenoid valve can be sealed more completely using the bottom cap 33.
A second sealing element 35 is arranged between the valve plate 32 and the accommodating cavity 14. The use of the second seal 35 may allow for better sealing of the bypass flow path when it is not needed.
The pressure-protected electromagnetic valve 100 further comprises a valve cover 5, the valve cover 5 is arranged on the top of the valve body 1, and a valve core 4 for conducting/cutting off a straight-through flow path is arranged inside the valve cover 5. When the electromagnetic valve is closed, the valve core 4 controls the inlet end 12 and the outlet end 11 to be disconnected so as to cut off a straight-through flow path.
The utility model discloses bottom at valve body 1 sets up pressure protection device 3, and pressure protection device 3 includes elastic component 31 and valve block 32, has increased first sealing member 34 and second sealing member 35 on valve block 32, has further improved the leakproofness of solenoid valve.
The utility model also provides a vehicle air conditioner, vehicle air conditioner install the solenoid valve of taking pressure protection as above-mentioned any one embodiment. The solenoid valve with pressure protection is not described in detail herein.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made, consistent with the principles of the invention, which are directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
1. A solenoid valve with pressure protection, comprising:
a valve body including an inlet end and an outlet end;
the mutually independent straight-through flow path and the mutually independent bypass flow path are both used for communicating the inlet end with the outlet end;
a pressure protection device arranged in the valve body and used for conducting/cutting off the bypass flow path;
the pressure protection device is configured to open under pressure to open the bypass flow path when the straight-through flow path is interrupted and a pressure differential between the inlet end and the outlet end is greater than a preset threshold.
2. The solenoid valve as claimed in claim 1, wherein said pressure protection means comprises:
the elastic piece is provided with two opposite ends, and one end of the elastic piece is connected with the valve body;
and the valve plate is connected with one end of the elastic piece, which is far away from the valve body, and is used for moving along with the elastic deformation of the elastic piece so as to conduct and/or cut off the bypass flow path.
3. The solenoid valve of claim 2,
the pressure protection device is arranged at the bottom of the valve body, the upper end of the elastic piece is connected with the valve block, the lower end of the elastic piece is connected with the bottom of the valve body, so that the elastic piece drives the valve block to move towards the bottom of the valve body when undergoing downward elastic deformation to conduct the bypass flow path, and drives the valve block to move upwards to block the bypass flow path when undergoing upward elastic deformation.
4. The solenoid valve of claim 2,
the bypass flow path also comprises a partition piece arranged between the inlet end and the outlet end, the partition piece is in sealing contact with the valve plate when the valve plate moves upwards to partition the bypass flow path, and the partition piece is spaced to conduct the bypass flow path when the valve plate moves downwards.
5. The solenoid valve of claim 4,
one side of the valve plate facing the partition member is provided with a first sealing member, so that the first sealing member is in sealing contact with the partition member when the valve plate moves upwards.
6. The solenoid valve of claim 2,
the preset threshold is the pretightening force of the elastic piece.
7. The solenoid valve of claim 2,
an accommodating cavity is formed in the bottom of the valve body, the accommodating cavity is provided with a bottom opening, and the pressure protection device is arranged in the accommodating cavity;
the electromagnetic valve also comprises a bottom cover used for blocking the bottom opening of the accommodating cavity and used for limiting the pressure protection device in the accommodating cavity.
8. The solenoid valve of claim 7,
and a second sealing element is arranged between the valve plate and the accommodating cavity.
9. The solenoid valve as claimed in claim 1, further comprising:
and the valve cover is arranged at the top of the valve body, and a valve core for conducting/cutting off the straight-through flow path is arranged in the valve cover.
10. An on-vehicle air conditioner characterized in that it is equipped with a solenoid valve according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920749917.XU CN210088093U (en) | 2019-05-23 | 2019-05-23 | Electromagnetic valve with pressure protection function and vehicle-mounted air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920749917.XU CN210088093U (en) | 2019-05-23 | 2019-05-23 | Electromagnetic valve with pressure protection function and vehicle-mounted air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210088093U true CN210088093U (en) | 2020-02-18 |
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ID=69479705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920749917.XU Active CN210088093U (en) | 2019-05-23 | 2019-05-23 | Electromagnetic valve with pressure protection function and vehicle-mounted air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210088093U (en) |
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2019
- 2019-05-23 CN CN201920749917.XU patent/CN210088093U/en active Active
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