CN204133256U - Exhaust valve component and the electric cooker with it - Google Patents

Abstract

The utility model discloses an exhaust valve assembly and an electric rice cooker with the exhaust valve assembly. The exhaust valve assembly comprises: a valve body, on which an air inlet is arranged; an exhaust cover, and the exhaust cover is movable. ground on the valve body; and a memory alloy piece, the two ends of the memory alloy piece are respectively connected with the valve body and the exhaust cover, and when the temperature is greater than or equal to the preset temperature, the memory alloy piece It is deformed and is suitable for driving the exhaust cover to move so that the air inlet communicates with the outside through the exhaust port provided on the exhaust cover or through the gap between the exhaust cover and the valve body. According to the exhaust valve assembly of the utility model, the heating efficiency and heat preservation effect of the cooking utensil can be improved, thereby making the cooking utensil more energy-saving and efficient.

Description

Exhaust valve assembly and electric rice cooker having same

technical field

The utility model relates to the field of kitchen utensils, in particular to an exhaust valve assembly and an electric cooker with the same.

Background technique

In the prior art, the heat preservation effect in the electric rice cooker is poor, so it needs to be improved.

Utility model content

The utility model aims to solve one of the technical problems in the related art at least to a certain extent. Therefore, an object of the present utility model is to provide an exhaust valve assembly with good thermal insulation effect.

Another object of the present utility model is to provide an electric rice cooker with the above-mentioned exhaust valve assembly.

The exhaust valve assembly according to the utility model includes: a valve body, on which an air inlet is provided; an exhaust cover, on which the exhaust cover is movably arranged on the valve body; and memory alloy parts , the two ends of the memory alloy piece are respectively connected with the valve body and the exhaust cover, and when the temperature is greater than or equal to a preset temperature, the memory alloy piece is deformed and is suitable for driving the exhaust cover to move so that The air inlet communicates with the outside world through the exhaust port provided on the exhaust cover or through the gap between the exhaust cover and the valve body.

According to the exhaust valve assembly of the present utility model, it can improve the heating efficiency and heat preservation effect of the cooking utensil, thereby making the cooking utensil more energy-saving and efficient.

In addition, according to the above-mentioned exhaust valve assembly of the present utility model, it may also have the following additional technical features:

According to an embodiment of the present invention, a first airflow passage is defined in the valve body, and the first airflow passage is connected to the air inlet; a first airflow passage is defined between the exhaust cover and the valve body. Two airflow passages, the second airflow passage is in communication with the first airflow passage; the memory alloy part is arranged in the second airflow passage; and when the temperature of the memory alloy part is greater than or equal to a preset temperature The memory alloy part is deformed and is adapted to drive the exhaust cover to move so that the second airflow channel communicates with the outside through the exhaust cover or the gap between the exhaust cover and the valve body.

According to an embodiment of the present utility model, the range of the preset temperature is 50°C-100°C.

According to an embodiment of the present invention, the valve body includes: a valve seat, the air inlet is formed at the bottom of the valve seat; and a valve cover, the valve cover is connected above the valve seat, the The valve seat and the valve cover jointly define the first airflow channel, and the valve cover is provided with an installation groove.

According to an embodiment of the present utility model, the installation groove is provided with a through hole that makes the first air flow channel communicate with the second air flow channel.

According to an embodiment of the present utility model, the exhaust cover is movable up and down in the installation groove, and the second air flow channel is defined between the installation groove and the exhaust cover.

According to an embodiment of the present invention, the exhaust cover is provided with a guide groove, and the side wall of the installation groove is provided with a protrusion, and the protrusion is clamped in the guide groove and can move along the guide groove. move in the height direction.

According to an embodiment of the present invention, the installation groove is provided with an assembly column, and the assembly column extends upward from the bottom wall of the installation groove, and the exhaust cover is provided with an annular flange, and the annular protrusion A rim extends downward from the lower surface of the exhaust cover, and the mounting post is disposed within the annular flange.

According to an embodiment of the present invention, the memory alloy piece is formed as a spring, one end of the spring is connected to the bottom wall of the installation groove, and the other end of the spring is connected to the bottom wall of the exhaust cover.

According to an embodiment of the present invention, the spring is arranged on the outer periphery of the annular flange.

According to an embodiment of the present invention, the spring is arranged between the inner peripheral surface of the annular flange and the outer peripheral surface of the assembly post.

According to an embodiment of the present utility model, the exhaust cover is provided with an exhaust port that communicates with the outside world, and the inner surface of the exhaust cover is provided with a hole segment that extends downward and is arranged around the exhaust port. , the lower end surface of the hole segment is in contact with the bottom wall of the installation groove, and when the airflow temperature is greater than or equal to a preset temperature, the memory alloy part is deformed and is suitable for driving the exhaust cover to move to conduct or cut off the The second airflow channel and the exhaust port.

According to an embodiment of the present utility model, a protrusion is provided on the installation groove, and the protrusion extends upward from the bottom wall of the installation groove. contact with the upper surface.

According to an embodiment of the present invention, there are a plurality of hole segments, and there are a plurality of protrusions corresponding to the plurality of hole segments one by one.

According to an embodiment of the present invention, a plurality of the hole segments surround the outer circumference of the annular flange, and a plurality of the protrusions surround the outer circumference of the annular flange.

According to an embodiment of the present invention, a limit bracket is provided on a side of the protruding portion adjacent to the annular flange, and at least a part of the limit bracket is directed from the upper surface of the protruding portion toward the annular flange. The edge extends inward, and the lower end of the annular flange is provided with a limiting boss, which extends outward from the outer peripheral surface of the annular flange along the radial direction of the annular flange. The valve assembly also includes a return spring, and the upper and lower ends of the return spring are respectively connected with the limit bracket and the limit boss.

According to the electric rice cooker of the utility model, it comprises: a cooker body, which defines a cooking space; a cover body, which can close the cooking space; and an exhaust valve assembly, which is arranged on the On the cover body, the exhaust valve assembly includes: a valve body, the valve body is provided with an air inlet, and the air inlet is connected to the cooking space; an exhaust cover, the exhaust cover can Actively arranged on the valve body; and a memory alloy piece, the two ends of the memory alloy piece are respectively connected with the valve body and the exhaust cover, and when the temperature is greater than or equal to the preset temperature, the memory alloy piece The component deforms and is suitable for driving the exhaust cover to move so that the air inlet is communicated with the outside world.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present utility model will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is a schematic structural view of an electric cooker according to an embodiment of the present invention;

Fig. 2 is a sectional view of an electric rice cooker according to an embodiment of the present invention;

Fig. 3 is an exploded view of an exhaust valve assembly according to an embodiment of the present invention;

Fig. 4 is a cross-sectional view showing that the second airflow passage of the exhaust valve assembly is not connected to the outside world according to an embodiment of the present invention;

Fig. 5 is a cross-sectional view of the second airflow channel of the exhaust valve assembly communicating with the outside world according to an embodiment of the present invention;

Fig. 6 is an exploded view of an exhaust valve assembly according to another embodiment of the present invention;

Fig. 7 is a cross-sectional view of the second airflow channel of the exhaust valve assembly according to another embodiment of the present invention, which is not in communication with the outside world;

Fig. 8 is a cross-sectional view of the second airflow channel of the exhaust valve assembly communicating with the outside world according to another embodiment of the present utility model;

FIG. 9 is an exploded view of an exhaust valve assembly according to one embodiment of the present invention.

Reference signs:

Exhaust valve assembly 100;

Valve body 10; valve seat 101; valve cover 102; first air flow channel 11; air inlet 12; installation groove 13; assembly column 14; protruding part 15; limit bracket 16; air intake cylinder 17;

Exhaust cover 20; second air flow channel 21; annular flange 22; exhaust port 23; hole section 24; limit boss 25; annular plate 26; guide groove 27;

through hole 131; bump 132;

Memory alloy parts 30;

return spring 40;

Rice cooker 200;

Pot body 50; cooking space 51;

Cover body 60; sealing ring 70; return valve 80; decorative sheet 90.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "upper", "lower", "front", "rear", Orientation indicated by "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. Or the positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be configured in a specific orientation, and operation, and therefore cannot be construed as a limitation of the utility model.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, "plurality" means two or more, unless otherwise specifically defined.

In this utility model, unless otherwise specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connection, or integration; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, it can be the internal conduction of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first feature and the second feature through an intermediary indirect contact. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

The exhaust valve assembly 100 according to the embodiment of the present utility model will be described in detail below with reference to the accompanying drawings.

As shown in FIGS. 1 to 8 , the exhaust valve assembly 100 according to the embodiment of the present invention includes: a valve body 10 , an exhaust cover 20 and a memory alloy part 30 . Wherein, the valve body 10 is provided with an air inlet 12, the exhaust cover 20 is movably arranged on the valve body 10, and the two ends of the memory alloy part 30 are respectively connected with the valve body 10 and the exhaust cover 20, when the air flow temperature is greater than Or when it is equal to the preset temperature, the memory alloy part 30 deforms and is suitable for driving the exhaust cover 20 to move so that the air inlet passes through the exhaust port 23 provided on the exhaust cover or passes through the gap between the exhaust cover and the valve body to communicate with the outside world. conduction.

The exhaust valve assembly 100 can be applied to cooking utensils, and the cooking utensils usually have a cooking space. For example, the exhaust valve assembly 100 can be applied to cooking utensils such as electric rice cookers, electric pressure cookers, and electric steamers. The exhaust valve assembly 100 can be detachably installed on the cooking appliance product. The steam or airflow generated inside the cooking utensil enters the exhaust valve assembly 100 through the air inlet 12. When the steam or airflow makes the temperature of the memory alloy part 30 greater than or equal to the deformation temperature of the memory alloy part 30, the memory alloy part 30 will Deformation occurs, and drives the exhaust cover 20 to move so that the steam or air flow in the exhaust valve assembly 100 can be communicated with the outside through the exhaust port on the exhaust cover or through the gap between the exhaust cover and the valve body, so that Release some steam to avoid spillage of food in the cooking space. When the temperature is reduced to lower than the deformation temperature of the memory alloy part 30, the memory alloy part 30 will return to the original state, that is, the memory alloy part 30 returns to the undeformed state, and the exhaust cover 20 makes the air inlet in the exhaust valve. The inside of the component is not connected to the outside, and the cooking space in the cooking appliance is still in a sealed state, preventing the steam from overflowing to the outside and causing the temperature in the cooking space to drop, thereby improving the utilization rate of heat and the heat preservation effect.

Specifically, a first airflow channel 11 is defined in the valve body 10 , and the first airflow channel 11 communicates with the air inlet 12 . A second airflow passage 21 is defined between the exhaust cover 20 and the valve body 10 , and the second airflow passage 21 communicates with the first airflow passage 11 . The memory alloy part 30 is arranged in the second airflow channel 21, and when the temperature is greater than or equal to the preset temperature, the memory alloy part 30 deforms and is suitable for driving the exhaust cover 20 to move so that the air inlet passes through the exhaust cover or the exhaust cover and the exhaust cover The gap between the valve bodies communicates with the outside world.

The steam or airflow in the cooking space can enter the first airflow passage 11 of the valve body 10 through the air inlet 12 of the valve body 10, and the first airflow passage 11 and the second airflow passage 21 communicate with each other, and the steam can flow from the first airflow passage. Channel 11 flows to a second gas flow channel 21 . When the liquid in the cooking utensil is heated, the steam in the cooking space enters the second airflow channel 21 through the air inlet 12, and when the temperature of the steam is greater than or equal to the deformation temperature of the memory alloy part 30, the memory alloy part 30 will be deformed , the memory alloy piece 30 can drive the exhaust cover 20 to move so that the second airflow channel 21 can communicate with the outside world, so that a part of the steam can be released to prevent the food in the cooking space from overflowing. When the cooking utensil starts to heat or finishes heating or low-power heating, the steam generated inside the cooking utensil decreases, the temperature of the steam may be lower, and the temperature of the steam may be lower than the deformation temperature of the memory alloy part 30, the memory alloy Part 30 will return to the original state, that is, the memory alloy part 30 returns to the undeformed state, and the exhaust cover 20 will close the second air flow channel 21, and the second air flow channel 21 will not be connected with the outside world. The space is still in a sealed state, so as to prevent the steam from overflowing to the outside and reduce the temperature in the cooking space, thereby improving the heat preservation effect.

Therefore, according to the exhaust valve assembly 100 of the embodiment of the present utility model, by setting the memory alloy piece 30 in the exhaust valve assembly 100, the memory alloy piece 30 can drive the second air flow channel 21 and the external air guide according to the steam temperature. Specifically, when the liquid in the cooking utensil is heated and boiled, the steam temperature may be greater than or equal to the deformation temperature of the memory alloy part 30, and the memory alloy part 30 can be deformed to drive the exhaust cover 20 move, so that the second airflow passage 21 is connected with the outside world, releases a part of the steam in the cooking space, and prevents the food in the cooking space from overflowing; when the cooking appliance starts to heat or finishes heating, the steam generated inside the cooking appliance decreases The temperature of the steam may be lower than the deformation temperature of the memory alloy part 30, the memory alloy part 30 returns to its original shape, the second airflow channel 21 is not connected to the outside world, and the cooking space in the cooking utensil is still in a sealed state, so as to prevent the steam from overflowing to the outside and causing the cooking space to be damaged. The temperature inside is reduced, which can improve the heating efficiency and heat preservation effect of the cooking appliance, so that the cooking appliance is more energy-saving and efficient.

Optionally, the preset temperature range of the memory alloy part 30 is 50°C-100°C, that is, the deformation temperature of the memory alloy part 30 is 50°C-100°C. It is preferably 60°C-95°C, which can ensure that during the heat preservation process, the heat preservation temperature in the cooking utensil is lower than the preset temperature, the memory alloy part 30 will not be deformed, and the cooking space in the cooking utensil is kept in a sealed state to avoid steam Spilling to the outside causes the temperature in the cooking space to decrease, improving the heat preservation effect; and it can also ensure that during the heating process, when the steam temperature in the cooking utensil increases, the memory alloy part 30 will be deformed in time to exhaust, effectively avoiding overflow.

In a specific embodiment of the present invention, the valve body 10 includes: a valve seat 101 and a valve cover 102 . Wherein, the air inlet 12 is formed at the bottom of the valve seat 101, the valve cover 102 is connected above the valve seat 101, the valve seat 101 and the valve cover 102 jointly define the first air flow channel 11, and the valve cover 102 is provided with a mounting groove 13 . Further, the exhaust cover 20 is movable up and down in the installation groove 13 , and a second air flow channel 21 is defined between the installation groove 13 and the exhaust cover 20 . Specifically, as shown in FIGS. 4 and 5 , the top of the valve seat 101 and the bottom of the valve cover 102 jointly define a first air flow passage 11, and the valve cover 102 and the valve seat 101 are sealed and connected by a sealing ring 70, so that The airtightness of the exhaust valve assembly 100 is improved. In addition, at least a part of the valve cover 102 is recessed downward to form the installation groove 13 structure, and the exhaust cover 20 has an annular plate 26 extending around its circumference. The outer peripheral wall of the annular plate 26 of the exhaust cover 20 is opposite to the inner peripheral wall of the installation groove 13 . At the same time, a guide groove 27 is provided on the annular plate 26 of the exhaust cover 20. Correspondingly, a projection 132 corresponding to the guide groove 27 is provided on the side wall of the installation groove 13, and the height of the projection 132 is smaller than that of the guide groove. 27 height, the protrusion 132 is stuck in the guide groove 27, and can move along the height direction of the guide groove 27, so that the exhaust cover 20 can be arranged on the valve body 10 up and down.

In a specific embodiment of the present utility model, the installation groove 13 is provided with an assembly column 14, and the assembly column 14 extends upward from the bottom wall of the installation groove 13, and the exhaust cover 20 is provided with an annular flange 22, and the annular flange 22 Extending downwardly from the lower surface of the exhaust cover 20 , the mounting post 14 is disposed within an annular flange 22 . Optionally, the memory alloy piece 30 is formed as a spring, one end of the spring is connected to the bottom wall of the installation groove 13 , and the other end of the spring is connected to the bottom wall of the exhaust cover 20 . Further, a spring is provided on the outer periphery of the annular flange 22 .

Specifically, as shown in Fig. 4 and Fig. 5, the upper end of the spring is connected with the inner wall of the exhaust cover 20, specifically, the upper end of the spring is connected with the bottom end of the annular flange 22, and the lower end of the spring is connected with the bottom wall of the mounting groove 13 Connection, specifically, the lower end of the spring is connected to the bottom end of the assembly column 14 . Thus, the mutual cooperation between the annular flange 22 and the assembly column 14 can prevent the exhaust cover 20 from moving or shaking in other directions, thereby enhancing the stability of the exhaust cover 20 when moving up and down. In other words, the assembly column 14 can be annular The flange 22 provides a certain guide to make the exhaust cover 20 more stable when moving up and down, and when the steam temperature is greater than or equal to the deformation temperature, the spring made of memory alloy material will become longer, and the spring can push upward to open the exhaust gas. Cover 20, so that the second airflow channel 21 is connected with the outside world. When the temperature of the steam is lower than the deformation temperature, the spring made of memory alloy material returns to its original state, that is, the spring that is deformed and elongated returns to its original state, and the second airflow The channel 21 is not connected to the outside world, and the cooking equipment is still in a sealed state. At the same time, the structure of the spring is reliable and the operation is stable, so that the operation of the exhaust valve assembly 100 can be made more stable, and the exhaust valve assembly 100 is not easy to be damaged.

Optionally, the memory alloy piece 30 may also be of a shrapnel structure, whereby the structure of the memory alloy piece 30 is simple, which can reduce production costs. Optionally, as shown in FIGS. 3 to 5 , a return valve 80 may also be provided on the exhaust valve assembly 100 , specifically, the return valve 80 may be provided on the bottom wall of the valve seat 101 . Thus, the condensed water formed after the steam is condensed can drop into the cooking space through the return valve 80 , thereby preventing more condensed water from remaining in the exhaust valve assembly 100 . Optionally, on the bottom wall of the valve seat 101 and around the edge of the air inlet 12, an air intake cylinder 17 extending in the up and down direction is provided, the air intake cylinder 17 communicates with the first air flow passage 11, and the air intake cylinder 17 can also be connected with the The cooking space of the cooker is switched on. Specifically, at least a part of the air intake tube 17 protrudes upwards from the upper surface of the valve seat 101 , and at the same time, at least a part of the air intake tube 17 protrudes downwards from the lower surface of the valve seat 101 .

In a specific embodiment of the present invention, the spring is arranged between the inner peripheral surface of the annular flange 22 and the outer peripheral surface of the assembly column 14 . Optionally, the exhaust cover 20 is provided with an exhaust port 23 that communicates with the outside world, and the inner surface of the exhaust cover 20 is provided with a hole section 24 that extends downward and is arranged around the exhaust port 23. The lower portion of the hole section 24 The end surface is in contact with the bottom wall of the installation groove 13, and the memory alloy part 30 deforms when the airflow temperature is greater than or equal to the preset temperature and is suitable for driving the exhaust cover 20 to conduct or block the second airflow channel 21 and the exhaust port 23. Specifically, when the steam temperature or airflow temperature is greater than or equal to the deformation temperature of the memory alloy part 30, the memory alloy part 30 becomes to push the exhaust cover 20 upwards, that is, the lower end of the hole section 24 of the exhaust cover 20 faces away from The direction of the bottom wall of the installation groove 13 moves, and the lower end of the hole section 24 breaks away from the bottom wall of the installation groove 13, so that the second airflow passage 21 can be communicated with the outside world, that is, the air inlet 12 and the second airflow passage 21 can be connected. to release some of the steam in the cooking space. When the cooking utensil just starts heating or when the heating ends, and under the condition that the steam temperature or the air flow temperature are less than the deformation temperature of the memory alloy part 30, the memory alloy part 30 will return to its original state, and the lower end surface of the hole section 24 will be in contact with the bottom of the mounting groove 13. The walls are in contact with each other, so that the second airflow channel 21 can be closed, that is, the second airflow channel 21 and the exhaust port 23 are in a blocked state, and the second airflow channel 21 is not connected to the outside world. As shown in FIG. 9 , a through hole 131 is provided on the bottom wall of the installation groove 13 , and the through hole 131 and the hole section 24 are staggered one by one, so that the first air flow channel 11 and the second air flow channel 21 are connected.

Optionally, a protrusion 15 is provided on the installation groove 13, and the protrusion 15 extends upward from the bottom wall of the installation groove 13. Specifically, as shown in FIGS. 4 and 5, at least the bottom wall of the installation groove 13 A part may protrude upward to form a protrusion 15 . The lower end surface of the hole section 24 is in contact with the upper surface of the projection 15 . Thereby, the length of the hole section 24 in the vertical direction can be shortened. Optionally, there are multiple hole segments 24 , and there are multiple protrusions 15 corresponding to the multiple hole segments 24 one by one. Optionally, a plurality of hole segments 24 surround the outer periphery of the annular flange 22 , and a plurality of protrusions 15 surround the outer periphery of the annular flange 22 . Specifically, as shown in the figure, there may be two or more hole segments 24 , and correspondingly, there may be two or more protrusions 15 . The through holes 131 are provided between the plurality of protrusions 15 and are staggered from the hole segments 24 , so that the first air flow channel 11 and the second air flow channel 21 are connected.

In a specific embodiment of the present invention, the protruding portion 15 is provided with a limit bracket 16 on one side adjacent to the annular flange 22, and at least a part of the limit bracket 16 is directed from the upper surface of the protruding portion 15 toward the annular flange 22. Extending inward, the lower end of the annular flange 22 is provided with a limiting boss 25, the limiting boss 25 extends outward from the outer peripheral surface of the annular flange 22 along the radial direction of the annular flange 22, and the exhaust valve assembly 100 also includes a return spring 40. The upper and lower ends of the return spring 40 are respectively connected with the limit bracket 16 and the limit boss 25. Specifically, as shown in FIG. 7 and FIG. 8 , the cross-sectional shape of the limiting bracket 16 is approximately L-shaped, and the projection of the limiting bracket 16 coincides with at least a part of the projection of the limiting boss 25 in the vertical direction. In addition, the return spring 40 is a compression spring, so that the upper and lower ends of the return spring 40 can abut against the limit bracket 16 and the limit boss 25 respectively. Thus, when the steam temperature does not reach the deformation temperature of the memory alloy piece 30, the return spring 40 can make the lower end surface of the hole section 24 abut against the upper surface of the protrusion 15, thereby sealing the cooking space of the cooking utensil, that is, The second air flow channel 21 is not connected to the outside world, and at the same time, the return spring 40 can make the exhaust cover 20 return to its original state quickly after the exhaust state ends.

Optionally, the exhaust valve assembly 100 may be integrally formed on the cooking appliance. Or alternatively, the exhaust valve assembly 100 can also be used as a separate detachable component on the lids of other cooking products. Thus, the versatility of the exhaust valve assembly 100 can be increased. Optionally, a decorative sheet 90 is further provided on the valve cover 102, and the shape of the decorative sheet 90 is substantially ring-shaped.

As shown in FIGS. 1 and 2 , an electric rice cooker 200 according to an embodiment of the present invention includes: a cooker body 50 , a cover body 60 and an exhaust valve assembly 100 . Wherein, the cooking space 51 is defined inside the pot body 50 , and the cover body 60 can close the cooking space 51 . The exhaust valve assembly 100 is arranged on the cover body 60, and the exhaust valve assembly 100 is the exhaust valve assembly 100 described in the above embodiments. The exhaust valve assembly 100 includes: a valve body 10 , an exhaust cover 20 and a memory alloy part 30 . Specifically, a first airflow passage 11 is defined in the valve body 10, an air inlet 12 is provided on the valve body 10, the air inlet 12 is connected to the cooking space 51, and the air inlet 12 is connected to the first airflow passage 11. . The exhaust cover 20 is movably arranged on the valve body 10 , and a second airflow channel 21 is defined between the exhaust cover 20 and the valve body 10 , and the second airflow channel 21 communicates with the first airflow channel 11 . The memory alloy piece 30 is arranged in the second airflow channel 21, and the two ends of the memory alloy piece 30 are respectively connected with the valve body 10 and the exhaust cover 20. When the airflow temperature is greater than or equal to the preset temperature, the memory alloy piece 30 is deformed and suitable for The exhaust cover 20 is driven to move so that the second airflow channel 21 communicates with the outside world.

Since the exhaust valve assembly 100 according to the above-mentioned embodiment of the utility model has the above-mentioned technical effect, the electric rice cooker 200 according to the embodiment of the present utility model also has a similar technical effect, that is, when the electric rice cooker 200 is heated, and the inside of the electric rice cooker When the temperature of the steam or the air flow is greater than or equal to the preset temperature of the memory alloy part 30, the memory alloy part 30 can make the second air flow passage 21 communicate with the outside, thereby releasing a part of the steam and preventing the food in the cooking space 51 from overflowing. When the electric rice cooker 200 starts heating or finishes heating, the steam in the cooking space 51 decreases, and the temperature of the steam or air flow may decrease, and the memory alloy part 30 will close the second air flow passage 21, that is, the second air flow passage 21 and the second air flow passage 21. The outside is not connected, so that the steam can be prevented from overflowing, and the heat preservation and heating effects of the electric rice cooker 200 can be improved, and the electric rice cooker 200 can be more energy-saving and efficient.

In the description of this specification, descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and should not be construed as limitations of the present invention, and those skilled in the art are within the scope of the present invention. Variations, modifications, substitutions and variations can be made to the above-described embodiments.

Claims (17)

1. An exhaust valve assembly, characterized in that, comprising: A valve body, the valve body is provided with an air inlet; a vent cap movably disposed on the valve body; and A memory alloy piece, the two ends of the memory alloy piece are respectively connected to the valve body and the exhaust cover, and when the temperature is greater than or equal to a preset temperature, the memory alloy piece deforms and is suitable for driving the exhaust cover Move to make the air inlet communicate with the outside world through the exhaust port provided on the exhaust cover or through the gap between the exhaust cover and the valve body. 2. The exhaust valve assembly of claim 1, wherein: A first airflow channel is defined in the valve body, and the first airflow channel communicates with the air inlet; A second airflow channel is defined between the exhaust cover and the valve body, and the second airflow channel communicates with the first airflow channel; The memory alloy part is arranged in the second airflow channel; and the memory alloy part is deformed when the temperature is greater than or equal to a preset temperature, and is suitable for driving the exhaust cover to move so that the The second airflow channel communicates with the outside world through the exhaust cover or the gap between the exhaust cover and the valve body. 3. The exhaust valve assembly according to claim 1, wherein the preset temperature ranges from 50°C to 100°C. 4. The exhaust valve assembly according to claim 2, wherein the valve body comprises: a valve seat, the inlet port being formed at the bottom of the valve seat; and A valve cover, the valve cover is connected above the valve seat, the valve seat and the valve cover jointly define the first airflow channel, and the valve cover is provided with an installation groove. 5 . The exhaust valve assembly according to claim 4 , wherein the installation groove is provided with a through hole for communicating the first air flow passage with the second air flow passage. 6 . 6. The exhaust valve assembly according to claim 4, wherein the exhaust cover is movable up and down in the installation groove, and the installation groove and the exhaust cover define a Describe the second airflow channel. 7. The exhaust valve assembly according to claim 4, wherein the exhaust cover is provided with a guide groove, and the side wall of the installation groove is provided with a protrusion, and the protrusion is clamped on the In the guide groove and can move along the height direction of the guide groove. 8. The exhaust valve assembly according to claim 4, wherein an assembly column is provided on the installation groove, and the assembly column extends upward from the bottom wall of the installation groove, An annular flange is provided on the exhaust cover, and the annular flange extends downward from the lower surface of the exhaust cover, and the assembly column is arranged in the annular flange. 9. The exhaust valve assembly according to claim 8, wherein the memory alloy piece is formed as a spring, one end of the spring is connected to the bottom wall of the installation groove, and the other end of the spring is connected to the bottom wall of the installation groove. connected to the bottom wall of the vent cover. 10. The exhaust valve assembly according to claim 9, wherein the spring is provided on the outer periphery of the annular flange. 11. The exhaust valve assembly according to claim 9, wherein the spring is disposed between an inner peripheral surface of the annular flange and an outer peripheral surface of the mounting post. 12. The exhaust valve assembly according to claim 8, characterized in that, the exhaust cover is provided with an exhaust port that communicates with the outside world, and the inner surface of the exhaust cover is provided with a The hole section arranged at the exhaust port, the lower end surface of the hole section is in contact with the bottom wall of the installation groove, When the airflow temperature is greater than or equal to a preset temperature, the memory alloy part deforms and is adapted to drive the exhaust cover to move to connect or block the second airflow channel and the exhaust port. 13. The exhaust valve assembly according to claim 12, wherein a protrusion is provided on the installation groove, and the protrusion extends upward from the bottom wall of the installation groove, and the hole section The lower end surface is in contact with the upper surface of the protrusion. 14. The exhaust valve assembly according to claim 13, wherein there are a plurality of hole segments, and there are a plurality of protrusions corresponding to the plurality of hole segments one by one. 15. The exhaust valve assembly according to claim 14, wherein a plurality of said hole segments surround the outer periphery of said annular flange, and a plurality of said protrusions surround the outer periphery of said annular flange. 16. The exhaust valve assembly according to claim 13, wherein a limit bracket is provided on a side of the protrusion adjacent to the annular flange, at least a part of the limit bracket protrudes from the The upper surface of the portion extends inwardly towards the annular flange, The lower end of the annular flange is provided with a limiting boss, and the limiting boss extends outward from the outer peripheral surface of the annular flange along the radial direction of the annular flange, The exhaust valve assembly further includes a return spring, and the upper and lower ends of the return spring are respectively connected with the limit bracket and the limit boss. 17. An electric rice cooker, comprising: a pot body, the pot body defines a cooking space; a lid that encloses the cooking space; and An exhaust valve assembly, the exhaust valve assembly is arranged on the cover, and the exhaust valve assembly includes: A valve body, the valve body is provided with an air inlet, and the air inlet communicates with the cooking space; a vent cap movably disposed on the valve body; and A memory alloy part, the two ends of the memory alloy part are respectively connected with the valve body and the exhaust cover, and when the temperature is greater than or equal to a preset temperature, the memory alloy part deforms and is suitable for driving the exhaust cover Move to make the air inlet communicate with the outside world.