CN204792609U - Gravity formula flow switch that resets - Google Patents
Gravity formula flow switch that resets Download PDFInfo
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- CN204792609U CN204792609U CN201520518675.5U CN201520518675U CN204792609U CN 204792609 U CN204792609 U CN 204792609U CN 201520518675 U CN201520518675 U CN 201520518675U CN 204792609 U CN204792609 U CN 204792609U
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Abstract
The utility model relates to a gravity formula flow switch that resets, including switch body and target pole, the target pole articulate in on the switch body, the one end of target pole position in fluid passage is the weight, and is used in when the fluid when pressure on the weight is not less than the predetermined pressure, target pole rotation to operating position, be used in when the fluid when pressure on the weight is less than the predetermined pressure, the weight drives the target pole resets to open position. This flow switch relies on the gravity of self to restore to the throne in reset process totally, and when pressure on the fluid is used in the weight is lighter than predetermined pressure, the produced pressure of rivers will be overcome to the gravity of weight, drives whole target pole and restores to the throne to open position around the pin joint rotation. This has simplified the restoring element of target pole with regard to the at utmost, has eliminated the easy cracked quality hidden danger of spring in the present structure, has effectively improved the reliability of fluid switch work.
Description
Technical field
The utility model relates to flow switch production technical field, particularly a kind of gravity reduction formula flow switch.
Background technology
Flow switch is widely used on refrigeration air-conditioner, supply equipment, water chiller, and its essence is when flow reaches certain value, flow signal can be converted to the senser element of the switching regulator signal of telecommunication.
Target sheet type flow switch is the one in numerous flow switch, under normal circumstances, target sheet one end is built in the passage of fluid, under the percussion of fluid, target sector-meeting produces displacement, thus driving the parts be connected with its other end to produce action, the action of these parts will cause connecting or disconnecting of contact, thus reaches object flow signal being converted to the switching regulator signal of telecommunication.
As shown in fig. 1, current flow switch comprises Switch main body and target bar, target bar is the unique channel transmitting fluid moment, the moment of fluid promotes target bar and rotates around the pin joint of himself, thus make the contact of target bar upper end and the contact of Switch main body, reach object flow signal being converted to the switching regulator signal of telecommunication.When fluid flow reduces, target sheet needs the restoring force relying on spring to reset, thus disconnects the connection between target bar contact and Switch main body contact.
Be not difficult to find, the reset of current flow switch target bar relies on spring completely, and spring will be soaked in fluid, permanent pressurized or stretch after, spring also exists the risk of fracture, once spring failure, target bar cannot normal reset, and whole fluid switch lost efficacy.
Therefore, the higher flow switch of a kind of reliability how can be provided to be the technical problem that current those skilled in the art need solution badly.
Utility model content
The purpose of this utility model is to provide a kind of gravity reduction formula flow switch, can provide the flow switch that a kind of reliability is higher, thus the situation effectively avoiding flow switch to lose efficacy occurs.
For solving the problems of the technologies described above, the gravity reduction formula flow switch that the utility model provides, comprise Switch main body and target bar, described target bar is articulated with on described Switch main body, one end that described target bar is positioned at fluid passage is weight, and when the pressure of fluid matasomatism on described weight is not less than predetermined pressure, described target bar rotates to on-position; When the pressure of fluid matasomatism on described weight is less than predetermined pressure, described weight drives described target bar to be reset to open position.
Preferably, described weight has vertical with the flow direction of fluid by stream interface.
Preferably, target bar is positioned at one end of described fluid passage centered by described target bar, extends to form described by stream interface towards the both sides perpendicular to direction of flow.
Preferably, described Switch main body is provided with the first contact, is provided with the shell fragment of band second contact near the position of described first contact, and described shell fragment is provided with the first magnet; Described target bar is provided with the second magnet repelled each other with described first magnet, and when described target bar rotates to on-position, the magnetic force between described second magnet and described first magnet makes described first contact and described second contact.
Preferably, described target bar is integral type target bar, and described target bar has the first bar section and the second bar section that angle is 145 °-170 °, and described first bar section stretches in described fluid passage, and described second magnet is arranged in described second bar section.
Preferably, the angle of described first bar section and described second bar section is 158 °, and when described first bar section is vertical with the flow direction of fluid, described target bar is in open position.
As can be seen from above technical scheme, in gravity reduction formula flow switch disclosed in the utility model, one end that target bar is positioned at fluid passage is designed in order to weight, and when the pressure of fluid matasomatism on weight is not less than predetermined pressure, target bar rotates to on-position; When the pressure of fluid matasomatism on weight is less than predetermined pressure, weight band moving-target bar is reset to open position.
Visible, flow switch after improvement relies on self gravity reduction completely in reseting procedure, when the pressure of fluid matasomatism on weight is less than predetermined pressure, the pressure that the gravity of weight will overcome current and produces, drives whole target bar around pin joint spinning reduction to open position.This just at utmost simplifies the reset components of target bar, eliminates the hidden danger of quality that spring in existing structure easily ruptures, effectively improves the reliability of fluid switch work.
Accompanying drawing explanation
Fig. 1 is the structural representation of flow switch in prior art;
Fig. 2 is the structural representation of the gravity reduction formula flow switch disclosed in the utility model embodiment;
Fig. 3 is that schematic diagram is looked on the right side of Fig. 2.
Wherein, 1 is Switch main body, and 2 is target bar, and 3 is shell fragment, and 4 is the first magnet, and 5 is the second magnet, and 6 is weight, and 21 is the first bar section, and 22 is the second bar section.
Embodiment
Core of the present utility model is to provide a kind of gravity reduction formula flow switch, can improve the reliability of flow switch further, the situation avoiding flow switch to lose efficacy occurs.
In order to make those skilled in the art person understand the utility model scheme better, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Gravity reduction formula flow switch disclosed in the present embodiment, comprise Switch main body 1 and target bar 2, target bar 2 is hinged on Switch main body 1, and one end that target bar 2 is positioned at fluid passage is weight 6, and when the pressure of fluid matasomatism on weight 6 is not less than predetermined pressure, fluid pressure will overcome the gravity of target bar 2, is promoted by target bar 2 to rotate to on-position; When the pressure of fluid matasomatism on weight 6 is less than predetermined pressure, fluid pressure cannot overcome the gravity of target bar 2, and target bar 2 is reset to open position under the drive of self weight 6.
What needs were described is, in the above-described embodiments, predetermined pressure was known in advance before design, according to this predetermined pressure, we can design the parameter such as the shape of target bar 2, the quality of weight 6, thus realize when fluid pressure reaches predetermined pressure, and target bar 2 can rotate smoothly to on-position, when fluid pressure is less than predetermined pressure, target bar 2 rotates to open position smoothly under the effect of weight 6.
Visible, flow switch in above-described embodiment relies on self gravity reduction completely in reseting procedure, when the pressure of fluid matasomatism on weight 6 is less than predetermined pressure, the pressure that the gravity of weight 6 will overcome fluid and produces, drives whole target bar 2 around pin joint spinning reduction to open position.This just at utmost simplifies the reset components of target bar 2, eliminates the hidden danger of quality that spring in existing structure easily ruptures, effectively improves the reliability of fluid switch work.
As shown in Figure 3, in order to ensure that weight 6 can the change of sensitive perception fluid flow, weight 6 is also provided with vertical with the flow direction of fluid by stream interface, and preferably symmetrically design about target bar 2 by stream interface, concrete, be positioned at one end of fluid passage at target bar 2 centered by target bar 2, extend to form by stream interface, to make the both sides stress equalization of target bar 2 towards the both sides perpendicular to direction of flow.
In fact, gravity reduction formula flow switch disclosed in the utility model, getting type for contact also improves, in the present embodiment, Switch main body 1 is provided with the first contact, the position of the first contact is provided with shell fragment 3, as shown in Figure 2, this shell fragment 3 is provided with the second contact, and shell fragment 3 is also provided with the first magnet, target bar 2 is provided with the second magnet repelled each other with the first magnet magnetic.When the pressure of fluid matasomatism on weight 6 is not less than predetermined pressure, promotion target bar 2 rotates by fluid, target bar 2 drives the second magnet near the first magnet, and owing to having the magnetic force repelled each other between two magnets, therefore there is deformation by under the effect of magnetic force in shell fragment 3, first contact and the second contact, and now target bar 2 just rotates to on-position; When the pressure of fluid matasomatism on weight 6 is less than predetermined pressure, weight 6 will drive whole target bar 2 to turn round reset, and thus the second magnet will away from the first magnet, and shell fragment 3 recovers deformation by under the elastic force effect of self, and the first contact and the second contact disconnect.
In order to optimize the technical scheme in above-described embodiment further, target bar 2 disclosed in the present embodiment is integral type target bar, and this target bar 2 has the first bar section 21 and the second bar section 22, first bar section 21 and the second bar section 22 are straight-bar, and there is between the first bar section 21 and the second bar section 22 angle of 145 °-170 °, first bar section 21 extend in fluid passage, and the second magnet is arranged in the second bar section 22.
Understandablely be, after target bar 2 is designed to two-part, can by angle between adjustment first bar section 21 and the second bar section 22, and the adjustment coordinating the quality of weight 6 can realize current predetermined pressure, namely the opening pressure of flow switch is regulated.The angle between the first bar section 21 and the second bar section 22 is recommended to be 158 ° in the utility model, after checking, when first bar section 21 and the second bar section 22 are in this angle, the long-time operation precision of rear target bar 2 that uses also can not reduce, and has reliable reset effect.
Gravity reduction formula flow switch disclosed in the utility model is particularly useful on water chiller, thus effectively solves the problem that in current water chiller, water flow switch cannot use due to spring failure.
Above gravity reduction formula flow switch provided by the utility model is described in detail.Apply specific case herein to set forth principle of the present utility model and execution mode, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping.Should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle, can also carry out some improvement and modification to the utility model, these improve and modify and also fall in the protection range of the utility model claim.
Claims (6)
1. a gravity reduction formula flow switch, comprise Switch main body (1) and target bar (2), described target bar (2) is articulated with on described Switch main body (1), it is characterized in that, one end that described target bar (2) is positioned at fluid passage is weight (6), and when the pressure of fluid matasomatism on described weight (6) is not less than predetermined pressure, described target bar (2) rotates to on-position; When the pressure of fluid matasomatism on described weight (6) is less than predetermined pressure, described weight (6) drives described target bar (2) to be reset to open position.
2. gravity reduction formula flow switch according to claim 1, is characterized in that, described weight (6) has vertical with the flow direction of fluid by stream interface.
3. gravity reduction formula flow switch according to claim 2, it is characterized in that, target bar (2) is positioned at one end of described fluid passage centered by described target bar (2), extends to form described by stream interface towards the both sides perpendicular to direction of flow.
4. gravity reduction formula flow switch according to claim 1, it is characterized in that, (1) is provided with the first contact to described Switch main body, be provided with the shell fragment (3) of band second contact near the position of described first contact, and described shell fragment (3) is provided with the first magnet (4); Described target bar (2) is provided with the second magnet (5) repelled each other with described first magnet (4), and when described target bar (2) rotates to on-position, the magnetic force between described second magnet (5) and described first magnet (4) makes described first contact and described second contact.
5. gravity reduction formula flow switch according to claim 4, it is characterized in that, described target bar (2) is integral type target bar, and described target bar (2) has the first bar section (21) and the second bar section (22) that angle is 145 °-170 °, described first bar section (21) stretches in described fluid passage, and described second magnet (5) is arranged in described second bar section (22).
6. gravity reduction formula flow switch according to claim 5, it is characterized in that, the angle of described first bar section (21) and described second bar section (22) is 158 °, and when described first bar section (21) is vertical with the flow direction of fluid, described target bar (2) is in open position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520518675.5U CN204792609U (en) | 2015-07-16 | 2015-07-16 | Gravity formula flow switch that resets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520518675.5U CN204792609U (en) | 2015-07-16 | 2015-07-16 | Gravity formula flow switch that resets |
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| Publication Number | Publication Date |
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| CN204792609U true CN204792609U (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520518675.5U Active CN204792609U (en) | 2015-07-16 | 2015-07-16 | Gravity formula flow switch that resets |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109494118A (en) * | 2018-10-18 | 2019-03-19 | 珠海格力电器股份有限公司 | Air-conditioning system water flow switch and air-conditioning system |
-
2015
- 2015-07-16 CN CN201520518675.5U patent/CN204792609U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109494118A (en) * | 2018-10-18 | 2019-03-19 | 珠海格力电器股份有限公司 | Air-conditioning system water flow switch and air-conditioning system |
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| GR01 | Patent grant |