CN219088969U - Pressure limiting valve, pot cover and pressure cooker - Google Patents

Abstract

The utility model discloses a pressure limiting valve, a pot cover and a pressure cooker, wherein the pressure limiting valve comprises a base, an exhaust pipe, a valve core and a valve body, wherein the base is used for arranging the pressure limiting valve on the pot cover, the exhaust pipe penetrates through the base and is communicated with the inside and the outside of the pressure cooker through an exhaust channel, the valve core is positioned above the exhaust pipe, the valve body is sleeved on the valve core, the valve core can move up and down along the axial direction of the exhaust pipe to open or close the exhaust pipe, the valve core comprises a closed valve core top and a valve core side wall with a side wall through hole, the inner side of the lower part of the valve core side wall is in clearance fit with the outer wall of the corresponding position of the exhaust pipe, and thus the valve core is matched with the exhaust pipe to form a containing cavity; when steam enters the containing cavity from the pressure cooker along the exhaust channel, the steam is exhausted through the side wall through holes. The pot cover comprises a pressure limiting valve and a cover body, and the pressure cooker comprises a pot cover and a pot body. The utility model has simple structure, and can intuitively judge the cooking condition of food in the pressure cooker through the jumping times of the pressure limiting valve when in use.

Description

Pressure limiting valve, pot cover and pressure cooker

Technical Field

The utility model relates to the technical field of cooking appliances, in particular to a pressure limiting valve, a pot cover and a pressure cooker.

Background

The pressure cooker is a cooker which utilizes the physical principle that the boiling point of liquid can be increased under higher air pressure and relies on the air pressure increase in the space of a closed container, so that the cooking temperature is increased and the cooking is accelerated. And when the pressure in the pressure cooker rises to a certain limit, the pressure limiting valve starts to continuously exhaust.

Chinese patent (CN 216854422U) discloses a pressure limiting structure, including air cock and pressure limiting valve, the pressure limiting valve cover is established on the air cock and is sealed the air cock, and the circumference of pressure limiting valve is equipped with annular arch, and the cover is equipped with annular balancing weight and supports on the annular arch on the pressure limiting valve, is equipped with the setting element on the air cock, and the balancing weight can upwards slide along the pressure limiting valve and support on the setting element, and when the balancing weight supports on the setting element the pressure limiting valve can slide along the centre bore direction of balancing weight. This solution has the following problems:

the user can only estimate the state of the food by the cooking time, and cannot judge by the pressure cooker itself. In view of the above, there is a need for structural improvement in the pressure limiting valve to solve the above-mentioned problems.

Disclosure of Invention

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a pressure limiting valve, including being used for setting up the pressure limiting valve on the base on the pot cover, pass the base and communicate the blast pipe inside and outside the pressure cooker through the exhaust passage, be located the case of blast pipe top and the valve body of cover locating the case, the case can reciprocate in order to open or close the blast pipe along blast pipe axial direction, the case includes confined case top and has the case lateral wall of lateral wall through-hole, the inboard of case lateral wall lower part and the outer wall clearance fit of blast pipe relevant position, from this case and blast pipe cooperation form the appearance chamber. When steam enters the containing cavity from the pressure cooker along the exhaust channel, the steam is exhausted through the side wall through holes.

The structural design of this scheme is simple, has only used a small amount of spare parts, has realized the stable lifting effect of case. The structural design of the scheme enables the high-pressure gas to only impact upwards and then be discharged from the side wall, so that the high-pressure gas can generate upward impact force for a long time to continuously lift the valve core. The lifting time of the valve core is long and stable, so that a user can conveniently judge the state of food in the pressure cooker through the lifting action of the valve core.

Preferably, the base edge has an annular step disposed about the through hole, the step having a plurality of steps, the steps being different in height.

Preferably, the valve body is annular and is provided with a supporting leg supported on the base, the valve body can rotate around the axis of the valve body, so that the supporting leg can change the step on the annular step of the base, the height supporting leg of the valve body is adjusted to be matched with the annular step on the base, the pressure limiting valve can adjust a plurality of gears, the maximum pressure value of the pressure cooker is changed, and the pressure cooker has better effect on cooking different kinds of foods.

Preferably, the valve core further comprises a valve core bottom, and the valve core bottom is provided with an annular boss protruding towards the periphery;

further, the valve body is provided with an adjusting ring, and the adjusting ring is close to the outer wall of the side wall of the valve core and is abutted with an annular boss at the bottom of the valve core. In turn, control of the maximum pressure in the pressure cooker is established to accommodate the different maximum pressures required to cook different foods.

Preferably, the pressure limiting valve further comprises a valve cap arranged at the top of the valve core, and the valve cap is made of heat insulation materials. The valve cap can protect the valve core from being damaged by the outside and also can protect a user from being scalded by the valve core.

Preferably, the valve body is provided with a dial protruding to the outside of the valve body for rotating the valve body. The plectrum can help the user more convenient rotatory valve body to because the plectrum outwards protrusion, can also prevent that the user from touching the case by mistake, promoted the security of pressure limiting valve.

The utility model also provides a pot cover, which comprises a pressure limiting valve and a pot cover body matched with the pressure limiting valve.

In addition, a sinking table is arranged on the cover body of the pot body, and a pressure limiting valve is arranged on the sinking table.

The utility model also provides a pressure cooker, which comprises a cooker cover and a cooker body matched with the cooker cover, wherein the cooker cover can be covered on the cooker body. The pot cover and the pressure cooker provided by the utility model are similar to the reasoning process of the beneficial effects of the pressure limiting valve, and are not repeated here.

These features and advantages of the present utility model will be disclosed in more detail in the following detailed description and the accompanying drawings. The best mode or means of the present utility model will be described in detail with reference to the accompanying drawings, but this is not a limitation of the technical solution of the present utility model.

Drawings

The utility model is further described below with reference to the accompanying drawings:

FIG. 1 is a schematic diagram of a pressure limiting valve according to an embodiment of the present utility model;

FIG. 2 is an exploded view of a pressure limiting valve according to an embodiment of the present utility model;

FIG. 3 is a cross-sectional view of a closed state of a pressure limiting valve according to an embodiment of the present utility model;

fig. 4 is a sectional view showing an opened state of the pressure limiting valve according to the embodiment of the present utility model.

The valve comprises a 1-valve core, a 2-exhaust pipe, a 3-valve body, a 4-base, a 5-valve cap, a 6-containing cavity, a 11-valve core top, a 12-valve core side wall, a 13-valve core bottom, a 111-valve tip, a 121-inner side wall, a 122-outer side wall, a 123-side wall through hole, a 131-valve core boss, a 21-exhaust channel, a 22-exhaust pipe boss, a 31-counterweight ring, a 32-adjusting frame, 321-support legs, 322-pulling sheets, a 41-base through hole and a 42-annular step.

Detailed Description

The technical solutions of the embodiments of the present utility model are explained below with reference to the drawings, but the following embodiments are only preferred embodiments of the present utility model, and not all the embodiments are described below. Based on the examples disclosed in the implementation, other examples that can be obtained by a person skilled in the art without making creative efforts are within the scope of the present utility model.

As shown in fig. 1 to 4, the present embodiment provides a pressure limiting valve, which includes a base 4 for being disposed on a cover (not shown in the drawings), an exhaust pipe 2 for communicating the inside and outside of the pressure cooker, a valve core 1 for closing the exhaust pipe 2, and a valve body 3 disposed on the base 4 and sleeved on the valve core 1.

The pressure limiting valve further comprises a valve cap 5 arranged above the valve core 1. The valve cap 5 is made of a material which is not easily heat-conductive, and can protect a user from being scalded. The valve cap 5 is fixed to the valve core 1 in a manner commonly used in the art, and will not be described herein.

The pressure limiting valve in the embodiment is a gravity valve, and when the pressure limiting valve is used, the gravity is utilized to control the air pressure. In use, the orientation is axial as shown in FIG. 1, with the bonnet 5 above and the base 4 below in the axial direction. The radial direction is perpendicular to the illustrated direction, and in the radial direction, the exhaust pipe 2 is positioned inside the limit valve, and the base 4 and the valve body 3 are positioned outside the limit valve.

As shown in fig. 2 and 3, the valve core 1 is a circular sleeve, and includes a valve core top 11, a valve core side wall 12, and a valve core bottom 13. The spool sidewall 12 is divided into an inner sidewall 121 and an outer sidewall 122 from inside to outside in the radial direction, and may be further divided into an upper portion, a middle portion, and a lower portion from top to bottom in the axial direction. The middle and lower parts of the inner side wall 121 are in clearance fit with the exhaust pipe 2, the gap is smaller, and the upper part is matched with the exhaust pipe 2 to form a containing cavity 6. The outer sidewall 122 directly contacts the air. The valve core side wall 12 further comprises a side wall through hole 123 for communicating the cavity 6 with the outside air, and the side wall through hole 123 is positioned at the upper part of the valve core side wall 12.

The inside of the valve core bottom 13 has a through hole for passing through the exhaust pipe 2 with a diameter slightly larger than the outer diameter of the exhaust pipe 2, and the outside of the valve core bottom 13 has a valve core boss 131 extending radially outward on the peripheral surface of the valve core bottom 13. The valve spool boss 131 may abut the valve body 3. The valve core top 11 is not provided with a through hole, and a top protrusion is provided above the top for fixing with the valve cap 5. A valve tip 111 is arranged below the valve core top 11, and the valve tip 111 is positioned in the containing cavity and can seal the exhaust pipe 2.

The exhaust pipe 2 has an exhaust passage 21 therein. Preferably, the diameter of the exhaust passage 21 is constant and maintained in a straight line. The exhaust pipe 2 may be divided into an upper portion, a middle portion, and a lower portion from top to bottom in the axial direction. The outer wall of the middle part of the exhaust pipe 2 is in clearance fit with the middle part of the valve core inner wall 121, and the gap is smaller, so that the gap between the outer wall of the middle part of the exhaust pipe 2 and the valve core inner wall 121 is smaller, and the diameter of the outer wall of the middle part of the exhaust pipe 2 can be larger than the diameters of other parts of the exhaust pipe 2, or the diameter of the middle part of the valve core side wall 121 is smaller than the diameters of other parts.

The lower part of the exhaust pipe 2 has an exhaust pipe boss 22 extending radially outwards, by means of which exhaust pipe boss 22 the exhaust pipe 2 abuts the seat 4, so that the exhaust pipe 2 does not fall unobstructed into the pressure cooker after passing through the seat 4. Meanwhile, the lower end of the exhaust pipe 2 passes through the base 4 and then passes through the cover body of the cooker to enter the pressure cooker, and the exhaust pipe 2 is fixed on the inner side of the cover body of the cooker by using conventional means such as nuts (not shown in the figure) and the like, so that the exhaust pipe 2 cannot be displaced upwards. The fixing of the exhaust pipe by means of nuts and the like is a common technical means in the art, and is not described in detail in this embodiment.

The valve body 3 with the function of the counterweight, which can be abutted against the valve core 1, comprises a counterweight ring 31 and an adjusting bracket 32. The balance weight ring 31 abuts against the valve core boss 131, and the adjusting frame 32 is sleeved outside the balance weight ring 31 and fixed with the balance weight ring 31. When the valve core boss 131 is jacked up by the steam discharged from the pressure cooker and is in a rising state, the valve core boss can be contacted with the weight ring 31 and give upward lift force to the weight ring 31, and the weight ring 31 gives downward gravity to the valve core 1 relatively.

The adjusting bracket 32 is movably provided on the base 4 and contacts the base 4 using only a few points. Specifically, the adjusting frame 32 is ring-shaped, and extends downward along the axial direction to form a plurality of supporting legs 321, and the supporting legs 321 are movably supported on the base 4. The legs 321 are slidable on the base 4 with rotation of the adjustment frame 32. The adjusting frame 32 is further provided with a protruding pulling piece 322, so that the adjusting frame 32 can be rotated more conveniently.

Because the counterweight ring 31 and the adjusting frame 32 are fixed to form the valve body 3, the adjusting frame 32 also has a counterweight function, and the valve body 3 can be driven to rotate by stirring the poking plate 322, so that the valve body 3 and the base 4 relatively rotate.

The base 4 is arranged on the pot cover body, and a base through hole 41 matched with the exhaust pipe 2 is arranged in the base 4. The base 4 is externally provided with a circumferentially extending annular step 42 adapted to the adjusting bracket 32, the annular step 42 being a protrusion of constant distance from the axis of the exhaust pipe 2, the heights of the protrusions being different to form the annular step 42. The support leg 321 of the valve body 3 can rotate relative to the annular step 42, and when the support leg 321 rotates, the support leg 321 can pass through protrusions with different heights. The annular step 42 is divided into a plurality of steps according to the difference in height of the protrusions, and the specific number of steps is not limited in this embodiment, and preferably, three steps in this embodiment.

Because this scheme is the limiting valve that utilizes gravity effect, and valve body 3 and case 1 pass through case boss 131 butt, therefore, when limiting valve work, valve body 3 can play the effect of counterweight.

When the contact point of the leg 321 with the base 4 is located at the first step, the weight ring 31 is closest to the base, and at this time, the weight ring 31 directly abuts against the valve core boss 131. When the valve body 3 is in the first step, the valve core 1 is always subjected to the gravity of the valve body 3. When the contact point of the support leg and the base 4 is located at the second step, the distance between the counterweight ring 31 and the base 4 is longer than that of the counterweight ring located at the first step, and the valve core 1 is only acted by the gravity of the valve body 3 when being lifted to a certain height. When the contact point of the support leg 321 and the base 4 is located at the third step, the distance from the counterweight ring 31 to the base is further than that when the counterweight ring is located at the second step, and the valve core 1 is not acted by the gravity of the valve body 3 all the time.

Thus, the plurality of steps may enable a user to conveniently control the maximum pressure value within the pressure cooker while using the pressure cooker. The lower the step at which the contact point is located, the greater the maximum pressure value. Controlling the maximum pressure value of the pressure cooker allows a user to control the optimal cooking time by adjusting the maximum pressure value of the pressure cooker when cooking different foods.

In this embodiment, when the pressure in the pressure cooker is raised gradually as cooking proceeds, the air pressure in the pressure cooker will be gradually higher than the atmospheric pressure outside the pressure cooker. When the impulse generated by the pressure difference between the inside and the outside of the pressure cooker is larger than the gravity of the valve core 1, the impulse generated by the pressure difference between the inside and the outside of the pressure cooker can jack up the valve core 1, so that the valve tip 111 leaves the hole at the upper end of the exhaust pipe 2, and the steam in the pressure cooker can be discharged through the gap between the valve tip 111 and the exhaust pipe 2 and enter the containing cavity 6 between the valve core 1 and the exhaust hole 2. At this time, since the inner sidewall 121 of the valve core 1 is in clearance fit with the outer wall of the middle part of the exhaust pipe 2, the gap is small, and the valve core top 11 is closed without a through hole, so that the steam entering the cavity 6 can only be discharged along the sidewall through hole 123 of the valve core 1. The steam entering the valve core 1 is discharged from bottom to top due to the fact that the flow direction of the steam is consistent with the direction of the exhaust pipe 2 through the exhaust channel 21 of the exhaust pipe 2, upward impact force is generated on the top 11 of the valve core, the valve core 1 can be continuously jacked for a long time until the internal pressure of the pressure cooker is reduced to a value at which the impact force for jacking the valve core cannot be provided, at the moment, the valve core 1 is rapidly lowered, and the exhaust pipe 2 is sealed by the valve core 1.

By the mode, when a user uses the pressure limiting valve, the cooking time and the cooking degree can be judged according to the jumping times of the pressure limiting valve, so that a better cooking effect is achieved. For example, when the food is cooked, the pressure limiting valve is jumped once to confirm that the food is cooked. When the non-easy-to-cook food is cooked, the pressure limiting valve jumps twice to confirm that the food is cooked. The number of beats corresponding to different kinds of foods is not limited in this embodiment.

The embodiment also provides a pot cover, which comprises a pot cover body and the pressure limiting valve. The cover body of the pot cover is provided with a sinking table, and the pressure limiting valve can be arranged on the sinking table through a base.

The embodiment also provides a pressure cooker, which comprises the cooker cover, a cooker body matched with the cooker cover, and a sealed accommodating cavity formed by covering the cooker body with the cooker cover.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (9)

1. The utility model provides a pressure limiting valve, includes is used for with the pressure limiting valve sets up the base on the pot cover, pass the base and pass through the inside and outside blast pipe of exhaust passage intercommunication pressure cooker, be located the case of blast pipe top and cover are located the valve body of case, the case can follow the blast pipe axial direction reciprocates in order to open or close the blast pipe, its characterized in that:

the valve core comprises a closed valve core top and a valve core side wall with a side wall through hole, the inner side of the lower part of the valve core side wall is in clearance fit with the outer wall of the corresponding position of the exhaust pipe, and therefore the valve core is matched with the exhaust pipe to form a containing cavity;

when the steam enters the containing cavity from the pressure cooker along the exhaust channel, the steam is exhausted through the side wall through hole.

2. The pressure limiting valve of claim 1 wherein the base rim has an annular step disposed about the through bore, the step having a plurality of steps, the steps being of different heights.

3. A pressure limiting valve according to claim 2, wherein the valve body is annular and provided with a foot supported on the base, the valve body being rotatable about its axis so that the foot can change the step on the annular step of the base to adjust the height of the valve body.

4. The pressure limiting valve of claim 1, wherein the valve spool further comprises a spool bottom provided with an annular boss protruding toward the outer periphery;

the valve body is provided with an adjusting ring, and the adjusting ring is close to the outer wall of the side wall of the valve core and can be in contact with the annular boss at the bottom of the valve core.

5. The pressure limiting valve of claim 1 further comprising a bonnet disposed on top of the valve spool, the bonnet being made of a thermally insulating material.

6. A pressure limiting valve according to claim 1, wherein the valve body is provided with a dial protruding outside the valve body for rotating the valve body.

7. A lid for a pot, comprising a pressure limiting valve according to any one of claims 1 to 6 and a lid body for the pot cooperating with the pressure limiting valve.

8. The lid of claim 7, wherein a sink is provided on the lid body, and the pressure limiting valve is disposed on the sink.

9. A pressure cooker, characterized by comprising a cooker cover as claimed in claim 7 or 8 and a cooker body matched with the cooker cover, wherein the cooker cover can be covered on the cooker body.

Images