CN207935496U - A kind of pressure security protective device and cooking apparatus - Google Patents
A kind of pressure security protective device and cooking apparatus Download PDFInfo
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- CN207935496U CN207935496U CN201820215520.8U CN201820215520U CN207935496U CN 207935496 U CN207935496 U CN 207935496U CN 201820215520 U CN201820215520 U CN 201820215520U CN 207935496 U CN207935496 U CN 207935496U
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Abstract
The utility model is related to pressure control protection technique fields, and in particular to a kind of pressure security protective device and cooking apparatus.Pressure security protective device provided by the utility model, including switching valve module, switch valve module and gas-guide tube, when the pressure in inlet channel is more than preset limiting pressure, when pressure i.e. in closed container is more than preset limiting pressure, switch the opened gas port of valve module, inlet channel is connected to by crossing gas port with ambient atmosphere, closed container is connected to by inlet channel with ambient atmosphere in this way, reduce pressure in closed container, avoid the problem that product has continued pressure in out of order permission closed container and generated security risk, play the role of decompression protection；Compared with existing pressure security protective device, the structure of pressure security protective device provided by the present application is simple, small, manufacturing cost is low, assembly is simple, reliability is high.
Description
Technical field
The utility model is related to pressure control protection technique fields, and in particular to a kind of pressure security protective device and use
The cooking apparatus of the pressure security protective device.
Background technology
There is following requirement when electric pressure rice cooker designs at present：1) when working normally, it is desirable that the parts such as interior pot are formed close
Good sealing can be formed by closing container, be unable to gas leakage, ensure that closed container interior energy normally plays pressure；2) pressure is held more than closed container
When by limiting value, pressure can be lowered by being vented in time, avoid damage of components；3) when external circuits abnormal power-down, production
Product can complete pressure release action, and pot inner pressure is lowered.Existing pressure security protective device need to be formed more with multiple parts
A mechanism completes the above action, complicated, and product reliability is not high.
Utility model content
(1) the technical problems to be solved in the utility model is：Existing pressure protective device is complicated, parts are more,
Cause the manufacturing cost of product higher, and the reliability and stability of device work are poor.
(2) technical solution
In order at least solve one of above-mentioned technical problem, the utility model provides a kind of pressure security protective device, including
Switch valve module and the internal gas-guide tube for forming inlet channel, formed inside the gas-guide tube one section of opening other end it is closed into
The open end in gas channel, the gas-guide tube is air inlet；The gas-guide tube crosses gas port equipped with what is be connected to the inlet channel,
The inlet channel is connected to by gas port excessively with ambient atmosphere, the normally closed gas port excessively of switch valve module, in the air inlet
Under the pressure effect of air pressure in channel, opening is described to cross gas port.
The beneficial effects of the utility model：
Pressure security protective device provided by the utility model, including gas-guide tube, the gas-guide tube inside form one end and open
The open end of the mouth closed inlet channel of the other end, the gas-guide tube is air inlet, is connected inside the air inlet and closed container
It is logical, and switch valve module normally closed gas port, the inlet channel being connected to closed container excessively and be not in communication with the outside, appearance closed in this way
Pressure inside device can continue to increase, and can achieve the purpose that normally to play pressure；When the pressure in the inlet channel is more than in advance
If limiting pressure when, i.e., when the pressure in the described closed container is more than preset limiting pressure, the switch valve module opening
Described to cross gas port, inlet channel is connected to by crossing gas port with ambient atmosphere, and such closed container passes through inlet channel and the external world
Atmosphere reduces pressure in closed container, and product is avoided to continue pressure in out of order permission closed container
Security risk is led to the problem of, decompression protection is played the role of；Compared with existing pressure security protective device, the application provides
Pressure security protective device structure it is simple, small, manufacturing cost is low, assembly is simple, reliability is high.
Further, the switch valve module includes shell, spool and elastic component；The lateral wall convex of the gas-guide tube
Go out to form protruding portion, the shell is sleeved on the outside of the protruding portion, and is formed between the protruding portion and cross gas port with described
The accommodating chamber of connection, the shell are equipped with the through-hole of connection accommodating chamber and ambient atmosphere, and one end of the spool is positioned at described
For blocking the gas port excessively in accommodating chamber, the other end passes through the through-hole；The elastic component is set in the accommodating chamber and is used for
Apply pretightning force for the spool, under the pressure effect of the air pressure in the inlet channel, the spool opening is described to cross gas
Mouthful.
Further, the spool is equipped with the first support portion, and the shell is equipped with second close to one end of the through-hole
Support portion, the elastic component are compressed spring, and the compressed spring is sleeved on the outside of the spool, and the compressed spring
One end is resisted against on first support portion, and the other end is resisted against on second support portion.
Further, the spool is cylindrical, and the outer wall of the spool protrudes outward forms first support portion,
First support portion include be circular the first supporter and the second supporter, one end of first supporter and the
One end of two supporters is connected, and the internal diameter of the compressed spring is greater than or equal to the outer diameter of first supporter, and is less than institute
The outer diameter of the second supporter is stated, one end of the compressed spring is sleeved on the outside of first supporter, and is resisted against described
On two supporters.
Further, the switch valve module further includes gasket, and the gasket is wrapped in the spool close to described
One end of gas port is crossed, the spool crosses gas port by the way that gasket closing is described.
Further, the switch valve module further includes the first sealing ring and the second sealing ring, and one end of the shell is logical
It crosses the first sealing ring with the outside wall surface of the gas-guide tube to connect, second sealing ring is set to the protruding portion and the shell
Junction.
Further, the shell is equipped with the first mounting groove, and second sealing ring is mounted on first mounting groove
Interior, the end of the protruding portion is resisted against on second sealing ring.
Further, the gas-guide tube be equipped with gas port side outside wall surface be equipped with the second mounting groove, the shell with
One end of the gas-guide tube connection is fixed in second mounting groove, and passes through the first sealing ring and second mounting groove bottom
Wall connects.
Further, the switch valve module further includes torsional spring, and a stabilizer blade of the torsional spring is fixed on the housing,
Another stabilizer blade of the torsional spring is resisted against in the outside wall surface of the spool, and the spool is equipped with limiting slot, and the spool moves
Dynamic to open described when crossing gas port, another stabilizer blade of the torsional spring is caught in the limiting slot, prevents the valve core reset.
The utility model additionally provides a kind of cooking apparatus, and airtight cavity, the cooking pot are formed in the cooking apparatus
Tool includes pressure security protective device described in any one of the above embodiments, and the airtight cavity is connected to the air inlet of the gas-guide tube.
Description of the drawings
The advantages of the utility model is above-mentioned and/or additional aspect is from combining in description of the following accompanying drawings to embodiment and will become
Obviously and it is readily appreciated that, wherein：
Fig. 1 is the sectional view of pressure security protective device provided by the utility model；
Fig. 2 is the portions the A enlarged drawing of Fig. 1.
Correspondence in wherein Fig. 1 and Fig. 2 between reference numeral and component names is：
1, gas-guide tube, 11, inlet channel, 111, air inlet, 12, exhaust passage, 121, exhaust outlet, 13, blocking portion, 14,
Protruding portion, 15, cross gas port, the 16, second mounting groove, 2, shell, 21, accommodating chamber, 211, spool, the 2111, first support portion,
2112, limiting slot, 2113, sprue, 212, compressed spring, 213, gasket, 22, torsional spring, the 23, first sealing ring, 24, second is close
Seal ring, the 25, second support portion, the 26, first mounting groove.
Specific implementation mode
In order to be more clearly understood that the above objects, features, and advantages of the utility model, below in conjunction with the accompanying drawings and have
The utility model is further described in detail in body embodiment.It should be noted that in the absence of conflict, this Shen
The feature in embodiment and embodiment please can be combined with each other.
As depicted in figs. 1 and 2, the utility model provides a kind of pressure security protective device,：Including switch valve module and interior
Portion forms the gas-guide tube of inlet channel, and one section of opening closed inlet channel of the other end is formed inside the gas-guide tube, described to lead
The open end of tracheae is air inlet；
The gas-guide tube be equipped be connected to the inlet channel cross gas port, the inlet channel by cross gas port with outside
Boundary's atmosphere, the normally closed gas port of crossing of switch valve module are beaten under the pressure effect of the air pressure in the inlet channel
Open the gas port excessively.Preferably, as shown in Figure 1, the both ends of the gas-guide tube 1 are respectively air inlet 111 and exhaust outlet 121, institute
The inside for stating gas-guide tube 1 forms gas channel, is equipped with blocking portion 13 in the gas channel, and the blocking portion 13 is by the air-flow
The exhaust passage 12 that the inlet channel 11 and one end open one end that channel partition is blocked at one end open one end block；It is wherein described
One end of inlet channel 11 is that 111 other end of air inlet is closed by blocking portion 13, and one end of the exhaust passage 12 is exhaust
121 other ends of mouth are closed by blocking portion 13, and the inlet channel 11 is connected to by crossing gas port 15 with ambient atmosphere, the switch
The normally closed gas port 15 excessively of valve module, when the pressure in the inlet channel 11 is more than preset limiting pressure, the switch
Valve module opening is described to cross gas port 15.
Pressure security protective device provided by the utility model, the air inlet 111 of the gas-guide tube 1 with inside closed container
Connection, while blocking portion 13 separates the gas channel inside gas-guide tube 1, and the normally closed gas port 15 excessively of valve module is switched,
The inlet channel 11 being connected to closed container is not in communication with the outside, and the pressure inside such closed container can continue to increase, can
To achieve the purpose that normally to play pressure；It is when the pressure in the inlet channel 11 is more than preset limiting pressure, i.e., described closed
When pressure in container is more than preset limiting pressure, the switch valve module open it is described cross gas port 15, inlet channel 11 and
It is connected to ambient atmosphere by crossing gas port 15, such closed container is connected to by inlet channel 11 with ambient atmosphere, is reduced closed
Container inner pressure avoids product from allowing to have continued asking for pressure generation security risk in closed container in the case that out of order
Topic, plays the role of decompression protection；Compared with existing pressure security protective device, pressure security protection dress provided by the present application
The structure set is simple, small, manufacturing cost is low, assembly is simple, reliability is high.
As depicted in figs. 1 and 2, the switch valve module includes shell 2, spool 211 and elastic component；The gas-guide tube 1
Lateral wall outwardly protrudes to form protruding portion 14, and the shell 2 is sleeved on the outside of the protruding portion 14, and with the protruding portion 14 it
Between formed and cross the accommodating chamber 21 that be connected to of gas port 15 with described, the shell 2, which is equipped with, is connected to leading to for accommodating chamber 21 and ambient atmosphere
Hole, the elastic component are set in the accommodating chamber 21 for applying pretightning force, one end of the spool 211 for the spool 211
For blocking the gas port 15 excessively in the accommodating chamber 21, the other end passes through the through-hole；When in the inlet channel 11
Pressure be more than preset limiting pressure when, the spool 211 open it is described cross gas port 15.In this way in the inlet channel 11
When pressure is more than preset limiting pressure, i.e., when the pressure in the described closed container is more than preset limiting pressure, inlet channel
Air pressure in 11 overcomes the pretightning force of the elastic component to push the spool 211 open, and opening is described to cross gas port 15, and then air inlet is logical
Gas in road 11 enters ambient atmosphere by crossing gas port 15 by accommodating chamber 21, through-hole, to reduce pressure in closed container, keeps away
Exempt from product continued in out of order permission closed container pressure lead to the problem of security risk, play decompression protection
Effect；And the pressure reduction after the pressure release in inlet channel 11, is less than the pretightning force of spring, and spring can push spool
211 continue to block the gas port 15 excessively, can also be worked normally in such closed container, normal to play pressure.
As shown in Fig. 2, the spool 211 is equipped with the first support portion 2111, the shell 23 is close to one end of the through-hole
Equipped with the second support portion 25, the elastic component is compressed spring 212, and the compressed spring 212 is sleeved on the outer of the spool 211
Side, and one end of the compressed spring 212 is resisted against on first support portion 2111, the other end is resisted against the second support portion 25
On, when closed container normally plays pressure or do not play pressure, compressed spring 212 is to be in compressive state, and compressed spring 212 is pressed
Contracting provides pretightning force between the first support portion 2111 and the second support portion 25, for spool 211, and spool 211 is made to block the mistake
Gas port 15；When the pressure in inlet channel 11 (i.e. in closed container) is more than preset limiting pressure, i.e., in inlet channel 11
Pressure when being more than the pretightning force of compressed spring 212, the pressure in inlet channel 11 can push spool 211 to open and described cross gas port
15, make the gas in closed container and inlet channel 11 along gas port 15 and accommodating chamber 21 excessively between spool 211 and through-hole
Gap is discharged outside in air, to play the role of reducing pressure in closed container.
Preferably, as shown in Fig. 2, the spool 211 is cylindrical, the outer wall of the spool 211 protrudes to be formed outward
First support portion 2111, first support portion 2111 includes the first supporter and the second supporter of annular shape, described
One end of first supporter is connected with one end of the second supporter, and the internal diameter of the compressed spring 212 is greater than or equal to described the
The outer diameter of one supporter, and exist less than the outer diameter of second supporter, i.e., described first supporter and the setting of the second supporter
The outside of the spool 211 is in ladder shaft-like in annular shape, spool 211 entire in this way, and one end of the compressed spring 212 is sleeved on
The outside of first supporter and the end for being resisted against second supporter, so more for the fixation of compressed spring 212
It is firm to add.
As depicted in figs. 1 and 2, the switch valve module further includes gasket 213, and the gasket 213 is wrapped in described
Spool 211 closes the gas port 15 excessively close to one end of the gas port 15 excessively, the spool 211 by the gasket 213.
The spool 211 blocks the gas port 15 excessively by gasket 213, can improve what the gas port 15 excessively sealed
Reliability, it is ensured that cross gas port 15 when normally playing pressure and be in air-tight state, normal pressure of guarantee is smoothed out.Preferably, such as
Shown in Fig. 2, the spool 211 is connected with sprue 2113 close to described one end for crossing gas port 15, and the gasket 213 is wrapped in institute
The outside of sprue 2113 is stated, while the spool 211 blocks the gas port 15 excessively by sprue 2113, it is further, described
Sprue 2113 is rectangular-shape.
As depicted in figs. 1 and 2, the switch valve module further includes the first sealing ring 23 and the second sealing ring 24, the shell
One end of body 2 connects with the outside wall surface of the gas-guide tube 1, and first sealing ring 23 is located at the shell 2 and the gas-guide tube 1
Between, second sealing ring 24 is set to the protruding portion 14 and 2 junction of the shell, close by the first sealing ring and second
Seal can improve the leakproofness that shell 2 is connect with gas-guide tube 1, it is ensured that normal to play being smoothed out for pressure；Preferably, the shell
2 are equipped with the first mounting groove 26, and second sealing ring 24 is mounted in first mounting groove 26, the end of the protruding portion 14
Portion is resisted against on second sealing ring 24；The outside wall surface that the gas-guide tube 1 was equipped with 15 side of gas port is equipped with the second installation
Slot 16, one end that the shell 2 is connect with the gas-guide tube 1 are fixed in second mounting groove 16, first sealing ring
23 are located between 1 outside wall surface of end and the gas-guide tube of shell 2.
As depicted in figs. 1 and 2, the protruding portion 14 forms the blocking portion 13 to 1 internal stretch of the gas-guide tube；
Preferably, the switch valve module further includes torsional spring 22, and a stabilizer blade of the torsional spring 22 is fixed on the shell 2
On, another stabilizer blade of the torsional spring 22 is resisted against in the outside wall surface of the spool 211, and the spool 211 is equipped with limiting slot
2112, when the gas port 15 excessively is opened in the movement of the spool 211, another stabilizer blade of the torsional spring 22 is caught in the limiting slot
In 2112, the spool 211 is prevented to reset；In this way after switching valve module completion overvoltage protection, another stabilizer blade of torsional spring 22
It can be caught in the limiting slot 2112, the spool 211 is prevented to reset, can be incited somebody to action only by way of manual reset in this way
The spool 211 is restored to initial position (that is to say and block the position for crossing gas port 15), can be with by this structure design
It prevents closed container that from can also continuing normally to play pressure after the problem for overvoltage occur, can ensure the peace of closed container work in this way
Quan Xing.
Certainly, the torsional spring 22 can also be substituted for other structures in the present embodiment, as long as the spool can be realized
211 purposes that can not be automatically reset after overvoltage protection, just can also realize the design philosophy of the utility model, should belong to this
The protection domain of utility model.
The operation principle of over-pressure safety device provided by the utility model is illustrated with reference to such as Fig. 2.
When having needed pressure, it is connected to inside the air inlet 111 and closed container of the gas-guide tube 1, while blocking portion 13 will
Gas channel inside gas-guide tube 1 separates, and switchs the normally closed gas port 15 excessively of valve module, the air inlet being connected to closed container
Channel 11 is not in communication with the outside, and the pressure inside such closed container can continue to increase, and can achieve the purpose that normally to play pressure；
When the pressure in the inlet channel 11 is more than preset limiting pressure, i.e., the pressure in the described closed container is big
When preset limiting pressure, the pressure in inlet channel 11 overcomes the pretightning force of the elastic component to push the spool 211 open,
Come open it is described cross gas port 15, then the gas in inlet channel 11 by crossing gas port 15, accommodating chamber 21, through-hole enter it is extraneous big
Gas avoids product from continuing pressure in out of order permission closed container and generates to reduce pressure in closed container
The problem of security risk, plays the role of decompression protection.
The utility model additionally provides a kind of cooking apparatus, such as electric cooker, electric pressure cooking saucepan, soy bean milk making machine, electrical boiler household
Cooking apparatus, the cooking apparatus is interior to form airtight cavity (cavity surrounded inside the i.e. described closed container), such as described electric meal
The accommodation space surrounded inside the closed containers such as the accommodation space of pot or electric pressure cooking saucepan in stewing, the cooking apparatus includes above-mentioned
Pressure security protective device described in embodiment, the airtight cavity are connected to the air inlet 111 of the gas-guide tube 1.By institute
It states cooking apparatus and uses pressure security protective device provided by the utility model, therefore the security performance of its work is more preferable, energy
It enough solves the problems, such as to allow to have continued pressure generation security risk in closed container in the case of product is out of order.
The pressure security protective device provided by the utility model is not limited only to apply in above-mentioned cooking apparatus
In, it can be applied in the fields such as oil, chemical industry, metallurgy, electric power, water supply, as long as to the pressure of various gases, liquid
The situation for being controlled and being protected is suitable for pressure security protective device provided by the present application.
It should be noted that switching valve module described in the embodiments of the present invention is not restricted to above-mentioned valve knot
Structure can also be solenoid valve etc., as long as the switch normally closed third air passing hole of valve module can be realized, to realize overvoltage protection
Function, while the structure of the solenoid valve (switch valve module) can be similar with the switch electromagnetic valve structure of valve module,
This is not being repeated.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (10)
1. a kind of pressure security protective device, it is characterised in that：Including switch valve module and the internal air guide for forming inlet channel
Pipe, the gas-guide tube inside form one section of opening closed inlet channel of the other end, and the open end of the gas-guide tube is air inlet；
The gas-guide tube is equipped with the gas port of crossing being connected to the inlet channel, and the inlet channel is big by crossing gas port and the external world
Gas is connected to, and the normally closed gas port of crossing of switch valve module opens institute under the pressure effect of the air pressure in the inlet channel
Stated gas port.
2. pressure security protective device according to claim 1, it is characterised in that：The switch valve module include shell,
Spool and elastic component；
The lateral wall of the gas-guide tube outwardly protrudes to form protruding portion, and the shell is sleeved on the outside of the protruding portion, and with institute
State formed between protruding portion with the accommodating chamber crossed gas port and be connected to, the shell is equipped with being connected to accommodating chamber and ambient atmosphere
One end of through-hole, the spool is located in the accommodating chamber for blocking the gas port excessively, and the other end passes through the through-hole, described
Elastic component is set in the accommodating chamber for applying pretightning force for the spool；The pressure of air pressure in the inlet channel is made
Under, the spool opening is described to cross gas port.
3. pressure security protective device according to claim 2, it is characterised in that：The spool is equipped with the first support
Portion, the shell are equipped with the second support portion close to one end of the through-hole, and the elastic component is compressed spring, the compressed spring
It is sleeved on the outside of the spool, and one end of the compressed spring is resisted against on first support portion, the other end is resisted against
On second support portion.
4. pressure security protective device according to claim 3, it is characterised in that：The spool is cylindrical, the valve
The outer wall of core protrudes outward forms first support portion, and first support portion includes the first supporter for being annular shape
It is connected with one end of the second supporter with one end of the second supporter, first supporter, the internal diameter of the compressed spring is big
In or equal to first supporter outer diameter, and less than second supporter outer diameter, an end cap of the compressed spring
In the outside of first supporter, and it is resisted against on second supporter.
5. pressure security protective device according to claim 2, it is characterised in that：The switch valve module further includes sealing
Pad,
The gasket is wrapped in the spool close to described one end for crossing gas port, and the spool closes institute by the gasket
Stated gas port.
6. pressure security protective device according to claim 2, it is characterised in that：The switch valve module further includes first
One end of sealing ring and the second sealing ring, the shell is connected by the first sealing ring with the outside wall surface of the gas-guide tube, described
Second sealing ring is set to the junction of the protruding portion and the shell.
7. pressure security protective device according to claim 6, it is characterised in that：The shell is equipped with the first installation
Slot, second sealing ring are mounted in first mounting groove, and the end of the protruding portion is resisted against second sealing ring
On.
8. pressure security protective device according to claim 6, it is characterised in that：The gas-guide tube was equipped with gas port side
Outside wall surface be equipped with the second mounting groove, one end that the shell is connect with the gas-guide tube is fixed on second mounting groove
It is interior, and connected with the second installation groove bottom wall by the first sealing ring.
9. pressure security protective device according to claim 2, it is characterised in that：The switch valve module further includes turning round
One stabilizer blade of spring, the torsional spring is fixed on the housing, another stabilizer blade of the torsional spring is resisted against the outer of the spool
On wall surface, the spool is equipped with limiting slot, when the gas port excessively is opened in the spool movement, another stabilizer blade of the torsional spring
It is caught in the limiting slot, prevents the valve core reset.
10. a kind of cooking apparatus, the cooking apparatus is interior to form airtight cavity, it is characterised in that：The cooking apparatus includes such as
The air inlet of claim 1 to 9 any one of them pressure security protective device, the airtight cavity and the gas-guide tube connects
It is logical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820215520.8U CN207935496U (en) | 2018-02-07 | 2018-02-07 | A kind of pressure security protective device and cooking apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820215520.8U CN207935496U (en) | 2018-02-07 | 2018-02-07 | A kind of pressure security protective device and cooking apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN207935496U true CN207935496U (en) | 2018-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820215520.8U Active CN207935496U (en) | 2018-02-07 | 2018-02-07 | A kind of pressure security protective device and cooking apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111067349A (en) * | 2018-10-19 | 2020-04-28 | 浙江绍兴苏泊尔生活电器有限公司 | Electric kettle |
-
2018
- 2018-02-07 CN CN201820215520.8U patent/CN207935496U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111067349A (en) * | 2018-10-19 | 2020-04-28 | 浙江绍兴苏泊尔生活电器有限公司 | Electric kettle |
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