CN204905150U - Pressure switch and refrigerating system who has it - Google Patents
Pressure switch and refrigerating system who has it Download PDFInfo
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- CN204905150U CN204905150U CN201520643838.2U CN201520643838U CN204905150U CN 204905150 U CN204905150 U CN 204905150U CN 201520643838 U CN201520643838 U CN 201520643838U CN 204905150 U CN204905150 U CN 204905150U
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- flexure strip
- push rod
- diaphragm
- pressure switch
- inserted sheet
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Abstract
The utility model discloses a pressure switch and refrigerating system who has it, pressure switch includes: and a housing. First inserted sheet and second inserted sheet, first inserted sheet and second inserted sheet interval are offered in the shell, are equipped with the stationary contact on the first inserted sheet, flexure strip, flexure strip are established on the second inserted sheet, and the one end of flexure strip links to each other with the second inserted sheet, and the other end is equipped with the movable contact, and the second of flexure strip is held mobilely so that the movable contact contacts or breaks away from with the stationary contact, the other end activity in order to promote the flexure strip in the shell of establishing of push rod, push rod movably, the diaphragm, diaphragm telescopically establishes in the shell, and the push rod is supported in order to promote the push rod activity to partly at least the ending of diaphragm, the flexible distance with the limiting diaphragm is established in the shell to locating part, locating part. According to the utility model discloses a pressure switch has promoted pressure switch's carrying capacity, has enlarged pressure switch's application range, has improved production efficiency.
Description
Technical field
The utility model relates to technical field of refrigeration equipment, more specifically, relates to a kind of pressure switch and has its refrigerating system.
Background technology
Pressure switch is mainly used in the refrigerating systems such as air-conditioning, plays pressure protect effect.Pressure protect can be divided into high voltage protective and cross low-voltage variation two kinds.Crossing high voltage protective is the Maximum safe pressure (prevent explosion and leak) that protection system internal pressure is no more than needed for system; Crossing low-voltage variation is the minimum safe pressure (preventing compressor from vacuumizing) that protection system internal pressure is not less than needed for system.Now conventional pressure switch has two kinds of forms, and their essential structure is identical, is all made up of several part below: wire, spring leaf, push rod, diaphragm, lid, copper pipe, moving contact, fixed contact, switch housing, inserted sheet and shell form.Difference is the moving contact of high-voltage switch gear (under atmospheric pressure sound contact disconnects) below fixed contact, the moving contact (under atmospheric pressure sound contact is closed) on fixed contact of low tension switch.
For high-voltage switch gear, when refrigerating system pressure raise and when being greater than diaphragm elastic force, diaphragm can move up, promote push rod, push rod promotes spring leaf again, when pressure is elevated to a certain degree, the moving contact be connected on spring leaf contacts with fixed contact, pressure switch conducting; When refrigerating system pressure reduce and when being less than diaphragm elastic force, diaphragm can move down, spring leaf also can move down, promote push rod move down, when pressure drop to a certain extent after, the moving contact be connected on spring leaf is separated with fixed contact, pressure switch disconnection.
For low tension switch, when refrigerating system pressure raise and when being greater than diaphragm elastic force, diaphragm can move up, promote push rod, push rod promotes spring leaf again, when pressure is elevated to a certain degree, the moving contact be connected on spring leaf is separated with fixed contact, and pressure switch disconnects; When refrigerating system pressure reduces and when being less than diaphragm elastic force, diaphragm can move down, spring leaf also can move down, and promotes push rod and moves down, when pressure drop to a certain extent after, the moving contact be connected on spring leaf contact with fixed contact, and pressure switch is closed.
In refrigeration systems, generally that high-voltage switch gear and low tension switch all will use, when refrigerating system is idle time, internal system pressure can tend to balance, and it is substantially identical that high-voltage switch gear and low tension switch bear pressure, and at this time the pressure that bears of low tension switch is much larger than the pressure of operation; The pipeline of refrigerating system needs signal piping withstand voltage after making at present in addition, and this pressure is also higher, is probably greater than the pressure that low pressure switch can bear.When pressure is too high time, the spring leaf of pressure switch and/or diaphragm may be out of shape and cause expendable damage.
Utility model content
The utility model is intended to one of solve the problems of the technologies described above at least to a certain extent.
For this reason, the utility model proposes a kind of pressure switch, this pressure switch compression resistance is strong, and the scope of application is extensive, and production efficiency is high.
The utility model also proposes a kind of refrigerating system with above-mentioned pressure switch.
According to the pressure switch of the utility model first aspect, comprising: shell; First inserted sheet and the second inserted sheet, described first inserted sheet and described second inserted sheet is spaced apart is located in described shell, described first inserted sheet is provided with fixed contact; Flexure strip, described flexure strip is located on described second inserted sheet, and one end of described flexure strip is connected with described second inserted sheet, and the other end is provided with moving contact, and the second end of described flexure strip is movable to make described moving contact contact with described fixed contact or to depart from; Push rod, it is movable with the other end promoting described flexure strip that described push rod is located in described shell movably; Diaphragm, described diaphragm telescopically is located in described shell, and stopping at least partially of described diaphragm supports described push rod to promote the activity of described push rod; Locating part, described locating part is located in described shell to limit the distance of stretch out and draw back of described diaphragm.
According to pressure switch of the present utility model; by arranging the locating part of the distance of stretch out and draw back of limiting diaphragm; can the deformation extent of conservative control diaphragm; when avoiding pressure too high, diaphragm deformation is excessive and cause expendable problem, thus improves the compression resistance of pressure switch, expands the scope of application of pressure switch; also manufacturer is facilitated can to use higher pressure when the system test such as withstand voltage; speed faster, and special measure need not be taked to protect pressure switch, improve production efficiency.
In addition, according to pressure switch of the present utility model, following additional technical characteristic can also be had:
According to an embodiment of the present utility model, described pressure switch also comprises: inner casing, it is interior and spaced apart with the diapire of described shell that described inner casing is located at described shell, installation cavity is limited with in described inner casing, one end of described first inserted sheet and described second inserted sheet is located in described installation cavity respectively and the other end stretches out described installation cavity, described fixed contact and described flexure strip are located in described installation cavity respectively, the diapire of described inner casing is provided with installing hole, described push rod is arranged in described installing hole, and described installation cavity is stretched in one end of described push rod, the other end stretches out described installation cavity, described diaphragm is located between the diapire of described shell and the diapire of described inner casing, the other end of described push rod only supports described diaphragm, described locating part is located between the diapire of described inner casing and described diaphragm.
According to an embodiment of the present utility model, described push rod is located in described installing hole along the vertical direction movably, the other end of described flexure strip is movable to make described moving contact contact or depart from described fixed contact in the vertical direction, the upper surface of described diaphragm is formed as outstanding arcwall face downwards, and described diaphragm and described push rod are coaxially arranged.
According to an embodiment of the present utility model, described locating part is formed as the annular of the lower end being set in described push rod, and the upper surface of described locating part only supports the lower surface of described inner casing.
According to an embodiment of the present utility model, described pressure Ka Guan also comprises: guide vane end stop, and on the interior upper wall surface that described guide vane end stop is located at described inner casing and the top being positioned at the other end of described flexure strip is to limit the operating range of the other end of described flexure strip.
According to an embodiment of the present utility model, described guide vane end stop and described push rod are coaxially arranged.
According to an embodiment of the present utility model, position corresponding with described push rod position on described flexure strip is provided with recessed groove downwards, and the lower surface of described push rod is formed as taper surface.
According to an embodiment of the present utility model, described fixed contact is located at the top of the second end of described flexure strip, described moving contact is located on the upper surface of the second end of described flexure strip, and the second end of described flexure strip is movable to make described moving contact contact or depart from described fixed contact in the vertical direction.
According to an embodiment of the present utility model, described fixed contact is located at the below of the second end of described flexure strip, described moving contact is located on the lower surface of the second end of described flexure strip, and the second end of described flexure strip is movable to make described moving contact contact or depart from described fixed contact in the vertical direction.
According to the refrigerating system of the utility model second aspect, comprise the pressure switch according to above-described embodiment.
Additional aspect of the present utility model and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the structural representation of the pressure switch according to the utility model embodiment;
Fig. 2 is the structural representation of the pressure switch according to another embodiment of the utility model.
Reference numeral:
Pressure switch 100;
Shell 10; Wire 11; Lid 12; Tube connector 13;
First inserted sheet 20; Fixed contact 21;
Second inserted sheet 30;
Flexure strip 40; Moving contact 41; Groove 42;
Push rod 50; Diaphragm 60; Locating part 70;
Inner casing 80; Installation cavity 81;
Guide vane end stop 90.
Embodiment
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
First the pressure switch 100 according to the utility model embodiment is specifically described by reference to the accompanying drawings below.
As depicted in figs. 1 and 2, shell 10, first inserted sheet 20, second inserted sheet 30, flexure strip 40, push rod 50, diaphragm 60 and locating part 70 is comprised according to the pressure switch 100 of the utility model embodiment.
Specifically, first inserted sheet 20 and the second inserted sheet 30 is spaced apart is located in shell 10, first inserted sheet 20 is provided with fixed contact 21, flexure strip 40 is located on the second inserted sheet 30, one end of flexure strip 40 is connected with the second inserted sheet 30, the other end is provided with moving contact 41, and the second end of flexure strip 40 is movable to make moving contact 41 contact with fixed contact 21 or to depart from.
It is movable with the other end promoting flexure strip 40 that push rod 50 is located in shell 10 movably, diaphragm 60 telescopically is located in shell 10, diaphragm 60 only to push bar 50 at least partially movable to promote push rod 50, locating part 70 is located in shell 10 with the distance of stretch out and draw back of limiting diaphragm 60.
In other words, pressure switch according to the utility model embodiment is formed primarily of shell 10, first inserted sheet 20, second inserted sheet 30, flexure strip 40, push rod 50, diaphragm 60 and locating part 70, wherein, first inserted sheet 20 and the second inserted sheet 30 is spaced apart is located in shell 10, one end of first inserted sheet 20 is provided with fixed contact 21, and one end of the second inserted sheet 30 is provided with flexure strip 40, and flexure strip 40 has certain elasticity, one end of flexure strip 40 is connected with one end of the second inserted sheet 30, and the other end is movable.The other end of flexure strip 40 is provided with moving contact 41, and moving contact 41 contacts with the fixed contact 21 on the first inserted sheet 20 or departs from along with the activity of flexure strip 40.
Push rod 50 is movable in housing 10, and one end of push rod 50 is connected with flexure strip 40, and the second end promoting flexure strip 40 is movable, thus realizes moving contact 41 and contact with fixed contact 21 or depart from.Also be provided with diaphragm 60 in shell 10, diaphragm 60 can deform along with the change of pressure, being connected with push rod 50 at least partially of diaphragm 60, and diaphragm 60 to promote push rod 50 in deformation process movable, and then the second end promoting flexure strip 40 is movable.Locating part 70 is located in shell 10, can the deformation extent of limiting diaphragm 60, thus when pressure can be avoided excessive, diaphragm 60 excessive deformation occurs and situation about can not reply occurs.
Wherein it should be noted that; pressure switch 100 also comprises the structures such as wire 11, lid 12, tube connector 13 usually; wherein; wire 11 and the first inserted sheet 20 are connected with the second inserted sheet 30 and draw from pressure switch 100; lid 12 is connected with tube connector 13 also and ft connection; external pressure is passed to diaphragm 60 by tube connector 13, thus diaphragm 60 is deformed according to external pressure, the switch of controlled pressure switch 100.Wherein, outside can refer to the pipeline in refrigerating system, and these syndetons and effect are all appreciated that to those skilled in the art and easily realize, and are therefore not described in detail.
Thus; according to the pressure switch 100 of the utility model embodiment; by arranging the locating part 70 of the distance of stretch out and draw back of limiting diaphragm 60; can the deformation extent of conservative control diaphragm 60; when avoiding pressure too high, diaphragm 60 is out of shape excessive and causes expendable problem; thus improve the compression resistance of pressure switch 100; expand the scope of application of pressure switch 100; also manufacturer is facilitated can to use higher pressure when the system test such as withstand voltage; speed faster; and special measure need not be taked to protect pressure switch 100, improve production efficiency.
According to an embodiment of the present utility model, pressure switch 100 also comprises: inner casing 80, it is interior and spaced apart with the diapire of shell 10 that inner casing 80 is located at shell 10, installation cavity 81 is limited with in inner casing 80, one end of first inserted sheet 20 and the second inserted sheet 30 is located in installation cavity 81 respectively and the other end stretches out installation cavity 81, fixed contact and flexure strip 40 are located in installation cavity 81 respectively, the diapire of inner casing 80 is provided with installing hole, push rod 50 is arranged in installing hole, and installation cavity 81 is stretched in one end of push rod 50, the other end stretches out installation cavity 81, diaphragm 60 is located between the diapire of shell 10 and the diapire of inner casing 80, the other end of push rod 50 only supports diaphragm 60, locating part 70 is located between the diapire of inner casing 80 and diaphragm 60.
Preferably, push rod 50 is located in installing hole along the vertical direction movably, the other end of flexure strip 40 is movable to make moving contact contact or to depart from fixed contact in the vertical direction, and the upper surface of diaphragm 60 is formed as outstanding arcwall face downwards, and diaphragm 60 and push rod 50 are coaxially arranged.
As depicted in figs. 1 and 2, in this application, an inner casing 80 is also provided with in shell 10, first inserted sheet 20 and the second inserted sheet 30 are plugged on inner casing 80 respectively, and the one end being provided with fixed contact 21 and flexure strip 40 is all positioned at installation cavity 81, the other end stretches out installation cavity 81, push rod 50 telescopically is located on inner casing 80, 60, diaphragm is located between the diapire of inner casing 80 and shell 10, the diapire of shell 10 is lid 12, a chamber is limited between the diapire of lid 12 and inner casing 80, tube connector 13 and this chamber conducting, diaphragm 60 is located in this chamber, and deform according to the air pressure in tube connector 13, thus it is movable to promote push rod 50.
Diaphragm 60 deformability in the vertical direction, particularly, diaphragm 60 in normal state, is formed as the arcuate structure given prominence to along the diapire of inner casing 80 downwards, and diaphragm 60 is upwardly out of shape when pressurized, thus promotion push rod 50 moves upward.If do not arrange locating part 70, diaphragm 60, when pressurized is excessive, may be extruded into the state of the diapire of laminating inner casing 80, forms excessive deformation, be difficult to return back to initial condition.And locating part 70 is located between the diapire of inner casing 80 and diaphragm 60, can effective limiting diaphragm 60 degree of being upwards out of shape, thus diaphragm 60 can be avoided to be extruded excessive deformation.
In embodiments more of the present utility model, locating part 70 is formed as the annular of the lower end being set in push rod 50, and the upper surface of locating part 70 only supports the lower surface of inner casing 80.
That is, locating part 70 is formed as loop configuration, and the lower end of push rod 50 can be set in, locating part 70 and the diaphragm 60 of loop configuration are coaxially arranged, diaphragm 60 is when crimp, the active force applied locating part 70 is even, can prevent diaphragm 60 from damaging owing to being extruded uneven, extends the useful life of diaphragm 60.
Alternatively, according to an embodiment of the present utility model, pressure switch 100 also comprises: guide vane end stop 90, and on the interior upper wall surface that guide vane end stop 90 is located at the inner casing 80 and top being positioned at the other end of flexure strip 40 is to limit the operating range of the other end of flexure strip 40.
In other words, in this application, except arrange can limiting diaphragm 60 deformation extent locating part 70 except, also be provided with the guide vane end stop 90 of the deformation extent that can limit flexure strip 40, guide vane end stop 90 can stop when flexure strip 40 is deformed into the maximum distortion limit that can return back to initial position to flexure strip 40, thus avoids flexure strip 40 to be caused damage by excessive compression.
Preferably, in embodiments more of the present utility model, guide vane end stop 90 and push rod 50 are coaxially arranged.Further, position corresponding with push rod 50 position on flexure strip 40 is provided with recessed groove 42 downwards, and the lower surface of push rod 50 is formed as taper surface.
As shown in Figure 1 or 2, in this application, guide vane end stop 90 is formed as the column extended along the vertical direction substantially, the lower surface of guide vane end stop 90 is formed as taper surface, and this taper surface in flexure strip 40 activity to the groove 42 only supported during correct position on flexure strip 40, the flexure strip 40 of this structure and guide vane end stop 90 coordinate more reasonable, longer service life.
Pressure switch 100 comprises high-voltage switch gear and low tension switch, and wherein, the pressure switch 100 shown in Fig. 1 is low tension switch, and the pressure switch 100 shown in Fig. 2 is high-voltage switch gear.
Specific to the application, as shown in Figure 1, fixed contact 21 is located at the top of the second end of flexure strip 40, and moving contact 41 is located on the upper surface of the second end of flexure strip 40, and the second end of flexure strip 40 is movable to make moving contact 41 contact or to depart from fixed contact 21 in the vertical direction.
Particularly, be described so that this low tension switch is used for refrigerating system, when refrigerating system pressure raise and when being greater than the elastic force of diaphragm 60, diaphragm 60 can deform and move up, promote push rod 50, push rod 50 promotes the second end of spring leaf 40 again, when pressure is elevated to a certain degree, the moving contact 41 be located on spring leaf 40 contacts with the fixed contact 21 on the first inserted sheet 20, pressure switch 100 conducting.
When pressure continues to raise, diaphragm 60 is subject to the protection of locating part 70, is only against on locating part 70, can not continues upwards, prevents diaphragm 60 from expendable distortion occurring.Meanwhile, spring leaf 40 can also be subject to the protection of guide vane end stop 90, and it is upwards movable to continue, and prevents expendable distortion.When refrigerating system Pressure Drop be low to moderate be less than diaphragm 60 elastic force time, diaphragm 60 can move down, and spring leaf 40 also can move down, promote push rod 50 to move down, when pressure drop to a certain extent after, the moving contact 41 be located on spring leaf 40 is separated with fixed contact 21, and pressure switch 100 disconnects.
As shown in Figure 2, fixed contact 21 is located at the below of the second end of flexure strip 40, and moving contact 41 is located on the lower surface of the second end of flexure strip 40, and the second end of flexure strip 40 is movable to make moving contact 41 contact or to depart from fixed contact 21 in the vertical direction.
Particularly, be described so that this high-voltage switch gear is used for refrigerating system, when refrigerating system pressure raise and when being greater than diaphragm 60 elastic force, diaphragm 60 can move up, promote push rod 50, the second end that push rod 50 promotes spring leaf 40 is again upwards movable, when pressure is elevated to a certain degree, the moving contact 41 be located on spring leaf 40 is separated with the fixed contact 21 on the first inserted sheet 20, and pressure switch 100 disconnects.
When pressure continues to raise, diaphragm 60 is subject to the protection of locating part 70, is only against on locating part 70, can not continues upwards, prevents diaphragm 60 from expendable distortion occurring.Meanwhile, spring leaf 40 is subject to the protection of guide vane end stop 90, and it is upwards movable to continue, and prevents expendable distortion.When refrigerating system Pressure Drop be low to moderate be less than diaphragm 60 elastic force time, diaphragm 60 can move down, and spring leaf 40 also can move down, promote push rod 50 to move down, when pressure drop to a certain extent after, the moving contact 41 be located on spring leaf 40 contacts with fixed contact 21, and pressure switch 100 closes.
The pressure switch 100 according to above-described embodiment is comprised according to the refrigerating system of the utility model embodiment, because the pressure switch 100 according to the utility model above-described embodiment has above-mentioned technique effect, therefore, refrigerating system according to the utility model embodiment also has corresponding technique effect, namely the compression resistance of pressure switch 100 is improved, the scope of application is extensive, and production efficiency is high.
According to the refrigerating system of the utility model embodiment other form and operation be all known for those of ordinary skills, be not described in detail here.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", orientation or the position relationship of the instruction such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In description of the present utility model, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the utility model, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, the concrete meaning of above-mentioned term in the utility model can be understood as the case may be.
In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can comprise the first and second features and directly contact, also can comprise the first and second features and not be directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is less than second feature.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment when not departing from principle of the present utility model and aim, revising, replacing and modification in scope of the present utility model.
Claims (10)
1. a pressure switch, is characterized in that, comprising:
Shell;
First inserted sheet and the second inserted sheet, described first inserted sheet and described second inserted sheet is spaced apart is located in described shell, described first inserted sheet is provided with fixed contact;
Flexure strip, described flexure strip is located on described second inserted sheet, and one end of described flexure strip is connected with described second inserted sheet, and the other end is provided with moving contact, and the second end of described flexure strip is movable to make described moving contact contact with described fixed contact or to depart from;
Push rod, it is movable with the other end promoting described flexure strip that described push rod is located in described shell movably;
Diaphragm, described diaphragm telescopically is located in described shell, and stopping at least partially of described diaphragm supports described push rod to promote the activity of described push rod;
Locating part, described locating part is located in described shell to limit the distance of stretch out and draw back of described diaphragm.
2. pressure switch according to claim 1, it is characterized in that, also comprise: inner casing, it is interior and spaced apart with the diapire of described shell that described inner casing is located at described shell, installation cavity is limited with in described inner casing, one end of described first inserted sheet and described second inserted sheet is located in described installation cavity respectively and the other end stretches out described installation cavity, described fixed contact and described flexure strip are located in described installation cavity respectively, the diapire of described inner casing is provided with installing hole, described push rod is arranged in described installing hole, and described installation cavity is stretched in one end of described push rod, the other end stretches out described installation cavity, described diaphragm is located between the diapire of described shell and the diapire of described inner casing, the other end of described push rod only supports described diaphragm, described locating part is located between the diapire of described inner casing and described diaphragm.
3. pressure switch according to claim 2, it is characterized in that, described push rod is located in described installing hole along the vertical direction movably, the other end of described flexure strip is movable to make described moving contact contact or depart from described fixed contact in the vertical direction, the upper surface of described diaphragm is formed as outstanding arcwall face downwards, and described diaphragm and described push rod are coaxially arranged.
4. pressure switch according to claim 3, is characterized in that, described locating part is formed as the annular of the lower end being set in described push rod, and the upper surface of described locating part only supports the lower surface of described inner casing.
5. pressure switch according to claim 3, is characterized in that, also comprises: guide vane end stop, and on the interior upper wall surface that described guide vane end stop is located at described inner casing and the top being positioned at the other end of described flexure strip is to limit the operating range of the other end of described flexure strip.
6. pressure switch according to claim 5, is characterized in that, described guide vane end stop and described push rod are coaxially arranged.
7. pressure switch according to claim 5, is characterized in that, position corresponding with described push rod position on described flexure strip is provided with recessed groove downwards, and the lower surface of described push rod is formed as taper surface.
8. pressure switch according to claim 1, it is characterized in that, described fixed contact is located at the top of the second end of described flexure strip, described moving contact is located on the upper surface of the second end of described flexure strip, and the second end of described flexure strip is movable to make described moving contact contact or depart from described fixed contact in the vertical direction.
9. pressure switch according to claim 1, it is characterized in that, described fixed contact is located at the below of the second end of described flexure strip, described moving contact is located on the lower surface of the second end of described flexure strip, and the second end of described flexure strip is movable to make described moving contact contact or depart from described fixed contact in the vertical direction.
10. a refrigerating system, is characterized in that, comprises the pressure switch according to any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520643838.2U CN204905150U (en) | 2015-08-24 | 2015-08-24 | Pressure switch and refrigerating system who has it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520643838.2U CN204905150U (en) | 2015-08-24 | 2015-08-24 | Pressure switch and refrigerating system who has it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204905150U true CN204905150U (en) | 2015-12-23 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520643838.2U Expired - Fee Related CN204905150U (en) | 2015-08-24 | 2015-08-24 | Pressure switch and refrigerating system who has it |
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| Country | Link |
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| CN (1) | CN204905150U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105070588A (en) * | 2015-08-24 | 2015-11-18 | 广东美的暖通设备有限公司 | Pressure switch and refrigerating system comprising same |
-
2015
- 2015-08-24 CN CN201520643838.2U patent/CN204905150U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105070588A (en) * | 2015-08-24 | 2015-11-18 | 广东美的暖通设备有限公司 | Pressure switch and refrigerating system comprising same |
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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: 20151223 Termination date: 20200824 |
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