CN110504133A - Pressure difference switch and water cooler with multi-gear adjustment function - Google Patents
Pressure difference switch and water cooler with multi-gear adjustment function Download PDFInfo
- Publication number
- CN110504133A CN110504133A CN201910920081.XA CN201910920081A CN110504133A CN 110504133 A CN110504133 A CN 110504133A CN 201910920081 A CN201910920081 A CN 201910920081A CN 110504133 A CN110504133 A CN 110504133A
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- China
- Prior art keywords
- spool
- pressure difference
- pressure
- difference switch
- elastic component
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/26—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/26—Details
- H01H35/30—Means for transmitting pressure to pressure-responsive operating part, e.g. by capsule and capillary tube
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
The invention discloses a kind of pressure difference switch and water cooler with multi-gear adjustment function, the pressure difference switch, comprising: shell, the shell have accommodating chamber；Spool, the spool are movably disposed in the accommodating chamber, and the accommodating chamber is separated into First pressure chamber and second pressure chamber by the spool；Elastic component, the elastic component setting is intracavitary in the first pressure, and the elastic component first end is arranged on the spool, and the second end of the elastic component is arranged on the first pressure cavity wall；The spool is displaced under the action of pressure difference and triggers the pressure difference switch and opened or closed；Regulating device, the regulating device are connect with the spool, and the regulating device is used to adjust the initial position of the spool.Pressure difference switch of the invention can change the pressure difference needed for triggering differential pressure switch is opened, improve the versatility of pressure difference switch according to actual needs by setting regulating device and in the intracavitary setting elastic component of first pressure.
Description
Technical field
The present invention relates to water cooler technical fields, and in particular to a kind of pressure difference switch with multi-gear adjustment function and cold
Water dispenser group.
Background technique
Large size water cooler is typically arranged with pressure difference switch, the on-off signal that unit mainboard passes through collection pressure difference switch at present
Judge whether unit water flow is abnormal.Concrete operating principle are as follows: under normal circumstances, unit water flow is greater than preset flow, because
This, for corresponding hydraulic pressure value also greater than the preset pressure value of pressure difference switch, pressure difference switch is connected to internal circuit in the effect of hydraulic pressure,
To exporting telecommunication number, staff can be made to know that unit water flow is normal；It is corresponding when unit water flow is lower than preset flow
Hydraulic pressure value again smaller than pressure difference switch preset pressure value when, hydraulic pressure can not maintain pressure difference switch to be connected again, lead to pressure difference switch
Internal circuit disconnects, and electric signal interrupts, and staff just knows that unit water flow is abnormal.
But in actual use, unit since it is desired that flow it is different, the preset pressure of corresponding pressure difference switch is different, therefore
The pressure difference switch model of different units is different, can not be general.
Summary of the invention
The invention discloses a kind of pressure difference switch and water cooler with multi-gear adjustment function, solves different units
Pressure difference switch model is different, problem that can not be general.
According to an aspect of the present invention, a kind of pressure difference switch is disclosed, comprising: shell, the shell have accommodating chamber；
Spool, the spool are movably disposed in the accommodating chamber, and the accommodating chamber is separated into First pressure chamber by the spool
With second pressure chamber；Elastic component, the elastic component setting is intracavitary in the first pressure, and the elastic component first end is arranged in institute
It states on spool, the second end of the elastic component is arranged on the first pressure cavity wall, and the elastic component is used for the valve
Core applies preact power；Pressure difference is formed under external pressure effect between the First pressure chamber and the second pressure chamber, institute
It states spool and is displaced under the action of pressure difference and triggers the pressure difference switch and open or close；Regulating device, the adjusting dress
It sets and is connect with the spool, the regulating device is used to adjust the initial position of the spool.
Further, the elastic component includes spring, and the spring first end is arranged on the spool, the elastic component
Second end be arranged on the first pressure cavity wall opposite with the spool；The initial position of the spool includes:
One initial position and the second initial position, in the first initial position, in the raw, the spring is to the valve for the spring
Core does not apply preact power；In the second initial position, the spool squeezes or stretches the spring, the spring deformation,
So that the spring applies preact power to the spool.
Further, the regulating device includes adjusting rod, and the adjusting rod is worn on the housing, the adjusting rod
First end be connected on the spool, the second end of the adjusting rod is located at the outside of the shell.
Further, the adjusting rod is provided with external screw thread, and screw hole is provided on the shell, and the adjusting rod is threaded through
It in the screw hole and is threadedly engaged, the adjusting rod in the screw hole by rotating, to control the spool different initial
Switch between position.
Further, the pressure difference switch further include: microswitch, the microswitch have contact, the contact
It is corresponding with the spool position that position is set, triggering pressure difference switch is opened after the spool is contacted with the contact.
Further, the spool further includes the valve rod for contacting the contact, in the valve rod movement routine between
Every being provided with multiple contacts.
Further, the spool edge setting is fluted, is provided on the inner wall of the shell and the groove phase
The protrusion matched, the protrusion are located in the groove, and the groove and the protrusion sealing cooperate, the first pressure is isolated
Chamber and the second pressure chamber；The spool also has drainage position, and the spool is in drainage position, and the protrusion is described recessed
Outside slot, the inner wall of the groove and the shell surrounds drainage channel, and the First pressure chamber and the second pressure chamber are logical
Cross the drainage channel connection.
Further, the shell includes: upper end cover, and the protrusion is provided on the upper end cover；Lower cover, under described
Drain valve is provided on end cap, the upper end cover and lower cover fastening surround the accommodating chamber, and the spool is located at drainage position
When, the groove and the lower cover inner wall surround the drainage channel.
Further, the upper end cover and the spool surround the First pressure chamber；The lower cover and the spool
Surround the second pressure chamber.
According to another aspect of the present invention, a kind of water cooler is disclosed, including above-mentioned pressure difference switch.
Pressure difference switch of the invention, by setting regulating device and in the intracavitary setting elastic component of first pressure, Ke Yigen
According to actual needs, initial position required for being adjusted spool by regulating device, the preact for applying elastic component to spool
Power changes, since the preact power that elastic component applies can offset a part of pressure difference, so that changing triggering differential pressure switch opens institute
The pressure difference needed, improves the versatility of pressure difference switch.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the pressure difference switch of the embodiment of the present invention；
Fig. 2 is the partial enlarged view of A in Fig. 1；
Legend: 11, shell；111, First pressure chamber；112, second pressure chamber；113, upper end cover；114, lower cover；115,
Protrusion；116, drain valve；12, spool；121, groove；122, valve rod；13, elastic component；14, regulating device；141, adjusting rod；
21, microswitch；22, contact；22a, the first contact；22b, the second contact.
Specific embodiment
Below with reference to embodiment, the present invention will be further described, but is not limited to the content on specification.
As depicted in figs. 1 and 2, the invention discloses a kind of pressure difference switches, comprising: shell 11, spool 12,13 and of elastic component
Regulating device 14, shell 11 have accommodating chamber；Spool 12 is movably disposed in accommodating chamber, and accommodating chamber is separated by spool 12
First pressure chamber 111 and second pressure chamber 112, spool 12 have initial position and open position；Elastic component 13 is arranged first
In pressure chamber 111,13 first end of elastic component is arranged on spool 12, and the second end of elastic component 13 is arranged in First pressure chamber 111
On inner wall, elastic component 13 is used to apply preact power to spool 12；Between First pressure chamber 111 and second pressure chamber 112 outside
Pressure difference is formed under the effect of portion's pressure, spool 12 is displaced under the action of pressure difference and triggers pressure difference switch and opened or closed；It adjusts
Regulating device 14 is connect with spool 12, and regulating device 14 is used for the initial position of adjusting spool 12, and regulating device 14 is by changing valve
The initial position of core 12 changes elastic component 13 to the preact power that spool 12 applies, and opens institute to adjust triggering differential pressure switch
The pressure difference needed.
In the prior art, not set spring, in unit water chamber adapter tube when having water flow, water flow respectively from water flow respectively from into
Enter First pressure chamber 111 and second pressure chamber 112 generates pressure difference, spool 12 is displaced under the action of pressure difference and triggers pressure difference
Switch opens or closes.
Elastic component 13 is arranged pressure difference switch of the invention by setting regulating device 14 and in First pressure chamber 111,
Can spool 12 be adjusted by required initial position by regulating device 14, make elastic component 13 to spool according to actual needs
The 12 preact power applied change, since the preact power that elastic component 13 applies can offset a part of pressure difference, to change touching
The pressure difference needed for differential pressure switch is opened is sent out, the versatility of pressure difference switch is improved.
In the above-described embodiments, elastic component 13 includes spring, and spring first end is arranged on spool 12, and the of elastic component 13
Two ends are arranged on 111 inner wall of First pressure chamber opposite with spool 12；The initial position of spool 12 includes: the first initial position
With the second initial position, in the first initial position, in the raw, spring does not apply preact power to spool 12 to spring；In
Second initial position, spool 12 squeezes or extension spring, spring deformation, so that spring applies preact power to spool 12.
Pressure difference switch of the invention, when spool 12 is adjusted to the first initial position by regulating device 14, spring is in nature shape
State, that is to say, that elastic deformation does not occur for spring, and spring does not apply preact power to spool 12, at this point, starting differential pressure switch
Required pressure difference is smaller；When increasing to pressure difference required for switching starting differential pressure, can lead to regulating device 14 will
Spool 12 is adjusted to the second initial position, at this point, elastic deformation occurs for spring, generates preact power to spool 12, so as to cause
Starting differential pressure switch needs bigger pressure difference, improves the versatility of pressure difference switch.
It is understood that in the present embodiment, the case where initial position of only illustrating is two positions, and be embodied
Can three, four and more than four initial positions, the principle of principle and the present embodiment be arranged according to actual needs in Cheng Zhong
Identical, details are not described herein again.
In the above-described embodiments, regulating device 14 includes adjusting rod 141, and adjusting rod 141 is threaded through on shell 11, adjusting rod
141 first end is connected on spool 12, and the second end of adjusting rod 141 is located at the outside of shell 11.Pressure difference switch of the invention,
By the way that adjusting rod 141 is arranged, the adjusting efficiency of spool 12 can be improved, facilitate installation and maintenance, improve working efficiency.
In the above-described embodiments, adjusting rod 141 is provided with external screw thread, and screw hole is provided on shell 11, and adjusting rod 141 is worn
It in screw hole and is threadedly engaged, adjusting rod 141 is cut between different initial positions by rotating in screw hole with control valve core 12
It changes.Pressure difference switch of the invention is threadedly engaged by the way that external screw thread is arranged on adjusting rod 141, and with the screw hole on shell 11, from
And control valve core 12 can be rotated in screw hole by adjusting rod 141, switch spool between different initial positions, mentions significantly
The convenience of height operation, effectively improves working efficiency.
In the embodiment shown in fig. 1, pressure difference switch further include: microswitch 21, microswitch 21 have contact 22, touching
The setting position of point 22 is corresponding with 12 position of spool, and triggering pressure difference switch is opened after spool 12 is contacted with contact 22.The present invention
Pressure difference switch, by be arranged microswitch 21, contact spool 12 with contact 22, realize the triggering of pressure difference switch.
In the above-described embodiments, spool 12 further includes the valve rod 122 for contacting contact 22, in 122 movement routine of valve rod
On be arranged at intervals with multiple contacts 22.
Microswitch 21 is corresponding with the quantity of initial position, by taking two initial positions as an example:
When spool 12 is located at the first initial position, valve rod 122 is not yet contacted with the first contact 22a, when pressure difference pushes spool
After 12 displacements, spool 12 touches the first contact 22a, at this point, the first microswitch is powered and feedback signal, it is micro- that mainboard receives first
The signal of dynamic switch illustrates that the corresponding cracking pressure of pressure difference switch is the first cracking pressure；
When spool 12 is located at the second initial position, valve rod 122 is contacted with the first contact 22a, valve rod 122 and the second contact
22b not in contact with, when pressure difference push spool 12 be displaced after, at this point, spool 12 simultaneously touch the first contact 22a, the second contact 22b,
First microswitch, the second microswitch be powered and feedback signal, and mainboard receives the first microswitch, the second microswitch
Signal illustrates that the corresponding cracking pressure of pressure difference switch is the second cracking pressure；
And so on,
When spool 12 is located at n-th of initial position, valve rod 122 contacts with the first contact 22a ..., valve rod 122 and n-th-
The contact of 1 contact, valve rod 122 and the n-th contact are to contact, after pressure difference pushes spool 12 to be displaced, at this point, the touching simultaneously of spool 12 the
One contact 22a ..., the n-th contact, the first microswitch ..., the n-th microswitch be powered and feedback signal, mainboard receives
First microswitch ..., the signal of the n-th microswitch, illustrate that the corresponding cracking pressure of pressure difference switch is n-th to open pressure
Power.
In the embodiment shown in fig. 1,12 edge of spool setting fluted 121, be provided on the inner wall of shell 11 with it is recessed
The protrusion 115 that slot 121 matches, protrusion 115 are located in groove 121, and groove 121 and 115 sealing of protrusion cooperate, to be isolated first
Pressure chamber 111 and second pressure chamber 112；Spool 12 also has drainage position, and spool 12 is in drainage position, and protrusion 115 is in groove
Outside 121, the inner wall of groove 121 and shell 11 surrounds drainage channel, and First pressure chamber 111 and second pressure chamber 112 pass through row
Aquaporin connection.Pressure difference switch of the invention can be convenient draining, avoid differential pressure switch inner product by the way that discharge structure is arranged
Water causes inner product water freezing under cold snap to damage pressure difference switch.
In the above-described embodiments, shell 11 includes: upper end cover 113 and lower cover 114, is provided with protrusion on upper end cover 113
115；Drain valve 116 is provided on lower cover 114, upper end cover 113 and the fastening of lower cover 114 surround accommodating chamber, and spool 12 is located at
When drainage position, groove 121 and 114 inner wall of lower cover surround drainage channel.Pressure difference switch of the invention passes through setting draining knot
Structure can be convenient draining, avoid ponding inside differential pressure switch, and inner product water freezing under cold snap is caused to damage pressure difference switch,
The sealing of component is influenced simultaneously.
In the above-described embodiments, upper end cover 113 and spool 12 surround First pressure chamber 111；Lower cover 114 is enclosed with spool 12
At second pressure chamber 112.
According to another aspect of the present invention, a kind of water cooler is also disclosed, including above-mentioned pressure difference switch.
Pressure difference switch of the invention takes over interior streamflow regime for detecting unit water chamber.In use, needing using first grade
When pressure, spool is adjusted to by first position by regulating device 14, at this point, spring is uncompressed, preset pressure is minimum, unit water
When having water flow in the adapter tube of room, water flow is flowed into from upper end cover low-pressure side, the on high-tension side water inlet of lower cover respectively.Because of lower cover side
Hydraulic pressure be higher than the hydraulic pressure of upper end cover side, spool moves from bottom to top under the action of pressure difference, and the valve rod on spool touches the
One contact 22a feeds back to the mainboard of unit to convert electric signal for the mechanical movement of valve rod, and display pressure difference switch is opened.
Conversely, when unit water chamber takes over interior water shortage/water flow deficiency, upper end cover is under at this time when water flow occurs abnormal
Pressure difference in end cap reduces, and spool lacks the power moved up, generates opposition because spring structure compresses early period, valve
Core moves down under the action of opposition.The valve rod on spool and the first contact 22a are detached from this time, do not generate telecommunications
Number, unit does not receive signal, and display pressure difference switch disconnects.
When needing the water flow judged to become larger, corresponding hydraulic pressure can also become larger, and what preset pressure difference also influenced becomes larger,
Spool is adjusted to second gear by regulating device 14, makes spool compressed spring, while valve rod touches the first contact 22a, and approaches
Second contact, the reaction force acts of spring make that spool is pushed to need bigger pressure, are equivalent to and improve pressure difference on spool
Preset value, in unit water chamber adapter tube when having water flow, because the hydraulic pressure of lower cover side is higher than the hydraulic pressure and spring bullet of upper end cover side
When the resultant force of power, the i.e. pressure difference of two sides are higher than preset value, spool is moved up, on the basis of touching the first contact 22a, simultaneously
The second contact is touched, to convert electric signal for the mechanical movement of valve rod, feeds back to the mainboard of unit, display pressure difference switch is opened
It opens.
Conversely, when unit water chamber takes over interior water shortage/water flow deficiency, upper end cover is under at this time when water flow occurs abnormal
Pressure difference in end cap reduces, and spool lacks the power moved up, generates opposition because spring structure compresses early period, valve
Core moves down under the action of opposition.The valve rod on spool and control element are detached from this time, do not generate electric signal, machine
Group does not receive signal, and display pressure difference switch disconnects.
Obviously, above embodiment of the invention be only to clearly illustrate example of the present invention, and not be
Restriction to embodiments of the present invention.For those of ordinary skill in the art, on the basis of the above description also
It can make other variations or changes in different ways.Here all embodiments can not be exhaustive.It is all to belong to this
The obvious changes or variations that the technical solution of invention is extended out are still in the scope of protection of the present invention.
Claims (10)
1. a kind of pressure difference switch characterized by comprising
Shell (11), the shell (11) have accommodating chamber；
Spool (12), the spool (12) are movably disposed in the accommodating chamber, and the spool (12) is by the accommodating chamber
It is separated into First pressure chamber (111) and second pressure chamber (112)；
Elastic component (13), elastic component (13) setting is in the First pressure chamber (111), elastic component (13) first end
It is arranged on the spool (12), the second end of the elastic component (13) is arranged on the First pressure chamber (111) inner wall, institute
Elastic component (13) are stated for applying preact power to the spool (12)；
Pressure difference is formed under external pressure effect between the First pressure chamber (111) and the second pressure chamber (112), it is described
Spool (12) is displaced under the action of pressure difference and triggers the pressure difference switch and opened or closed；
Regulating device (14), the regulating device (14) connect with the spool (12), and the regulating device (14) is for adjusting
The initial position of the spool (12).
2. pressure difference switch according to claim 1, which is characterized in that
The elastic component (13) includes spring, and the spring first end is arranged on the spool (12), the elastic component (13)
Second end be arranged on the First pressure chamber (111) inner wall opposite with the spool (12)；
The initial position of the spool (12) includes: the first initial position and the second initial position, described in the first initial position
In the raw, the spring does not apply preact power to the spool (12) to spring；In the second initial position, the spool
(12) spring, the spring deformation are squeezed or stretch, so that the spring applies preact to the spool (12)
Power.
3. pressure difference switch according to claim 1, which is characterized in that
The regulating device (14) includes adjusting rod (141), and the adjusting rod (141) is threaded through on the shell (11), described
The first end of adjusting rod (141) is connected on the spool (12), and the second end of the adjusting rod (141) is located at the shell
(11) outside.
4. pressure difference switch according to claim 3, which is characterized in that
The adjusting rod (141) is provided with external screw thread, and screw hole is provided on the shell (11), and the adjusting rod (141) wears
It in the screw hole and is threadedly engaged, the adjusting rod (141) in the screw hole by rotating, to control the spool (12)
Switch between different initial positions.
5. pressure difference switch according to claim 1, which is characterized in that the pressure difference switch further include:
Microswitch (21), the microswitch (21) have contact (22), the setting position of the contact (22) and the valve
Core (12) position is corresponding, and triggering pressure difference switch is opened after the spool (12) contacts with the contact (22).
6. pressure difference switch according to claim 5, which is characterized in that
The spool (12) further includes for contacting the valve rod of the contact (22) (122), in the valve rod (122) movement routine
On be arranged at intervals with multiple contacts (22).
7. pressure difference switch according to claim 1, which is characterized in that
Fluted (121) are arranged in spool (12) edge, are provided with and the groove (121) on the inner wall of the shell (11)
The protrusion (115) to match, the protrusion (115) are located in the groove (121), the groove (121) and the protrusion
(115) sealing cooperation, the First pressure chamber (111) and the second pressure chamber (112) is isolated；
The spool (12) also has drainage position, and the spool (12) is in drainage position, and the protrusion (115) is in the groove
(121) external, the inner wall of the groove (121) and the shell (11) surrounds drainage channel, the First pressure chamber (111) and
The second pressure chamber (112) is connected to by the drainage channel.
8. pressure difference switch according to claim 7, which is characterized in that the shell (11) includes:
Upper end cover (113) is provided with raised (115) on the upper end cover (113)；
Lower cover (114) is provided with drain valve (116) on the lower cover (114), the upper end cover (113) and lower cover
(114) it fastens and surrounds the accommodating chamber, when the spool (12) is located at drainage position, the groove (121) and the lower cover
(114) inner wall surrounds the drainage channel.
9. pressure difference switch according to claim 8, which is characterized in that
The upper end cover (113) and the spool (12) surround the First pressure chamber (111)；
The lower cover (114) and the spool (12) surround the second pressure chamber (112).
10. a kind of water cooler, which is characterized in that including pressure difference switch described in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910920081.XA CN110504133A (en) | 2019-09-26 | 2019-09-26 | Pressure difference switch and water cooler with multi-gear adjustment function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910920081.XA CN110504133A (en) | 2019-09-26 | 2019-09-26 | Pressure difference switch and water cooler with multi-gear adjustment function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110504133A true CN110504133A (en) | 2019-11-26 |
Family
ID=68592814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910920081.XA Pending CN110504133A (en) | 2019-09-26 | 2019-09-26 | Pressure difference switch and water cooler with multi-gear adjustment function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110504133A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112146227A (en) * | 2020-08-31 | 2020-12-29 | 珠海格力电器股份有限公司 | Pressure detection switch, air conditioner control method and device, air conditioner and storage medium |
-
2019
- 2019-09-26 CN CN201910920081.XA patent/CN110504133A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112146227A (en) * | 2020-08-31 | 2020-12-29 | 珠海格力电器股份有限公司 | Pressure detection switch, air conditioner control method and device, air conditioner and storage medium |
| CN112146227B (en) * | 2020-08-31 | 2022-04-12 | 珠海格力电器股份有限公司 | Pressure detection switch, air conditioner control method and device, air conditioner and storage medium |
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