CN217090319U - Cooking apparatus - Google Patents

Abstract

The utility model relates to a cooking device, including equipment body, steam generator, ooff valve and relief valve. Be formed with the culinary art chamber in the equipment body, the intercommunication has steam delivery path between steam generator steam outlet and the culinary art chamber. The switch valve is arranged on the steam delivery passage. The inlet of the pressure relief valve is directly or indirectly communicated with the steam outlet of the steam generator, the outlet of the pressure relief valve is directly or indirectly communicated with the cooking cavity, and the pressure relief valve is controlled by the pressure of the part, located between the steam generator and the switch valve, in the steam delivery passage to perform state switching. When the switch valve breaks down or other reasons lead to the switch valve to be in the closed condition, steam in the steam delivery route can't pass through the switch valve during, along with the increase of pressure in the steam delivery route, the relief valve is triggered to open when pressure increases to a definite value, and then steam among the steam generator can flow through and get into the culinary art chamber behind the relief valve to avoid the condition emergence that the pipeline bursts, improve the security of using.

Description

Cooking apparatus

Technical Field

The utility model relates to a kitchen appliance technical field especially relates to cooking equipment.

Background

With the development of the technical field of kitchen appliances, cooking devices with steaming function are more and more popular. The steam function is mainly realized by heating water into steam by a steam generator and conveying the steam into the cooking cavity. In order to realize flexible control of the steam, a switch piece can be arranged on a channel for conveying the steam. When a user has a steam function demand, the steam generator is started, the switch piece is started, and steam can be conveyed into the cooking cavity; when the user has no steam function demand, the steam generator is closed, and the switch member is closed. In the actual use process, if the switch piece is in a closed state due to failure and the steam generator is in an open state, the steam is continuously gathered in a pipeline communicated between the steam generator and the switch piece, and the potential safety hazard of pipeline burst exists.

SUMMERY OF THE UTILITY MODEL

The utility model discloses there is the problem of the potential safety hazard that the pipeline remains to cooking equipment, provide a cooking equipment, effectively avoid the risk that the pipeline bursts.

A cooking apparatus comprising:

an apparatus body having a cooking cavity formed therein;

a steam delivery passage is communicated between a steam outlet of the steam generator and the cooking cavity;

a switching valve provided in the steam delivery passage;

and an inlet of the pressure relief valve is directly or indirectly communicated with a steam outlet of the steam generator, an outlet of the pressure relief valve is directly or indirectly communicated with the cooking cavity, and the pressure relief valve is controlled by the pressure of a part, positioned between the steam generator and the switch valve, of the steam delivery passage to perform state switching.

The scheme provides a cooking device, in the normal use process, if steam needs to be provided for the cooking cavity, the steam generator is started, the switch valve is opened, and the steam is conveyed to the cooking cavity through the steam conveying passage. When the switch valve is in a closed state due to faults or other reasons, the pressure relief valve is triggered to open when the pressure in the steam delivery passage is increased to a certain value along with the increase of the pressure in the steam delivery passage when the steam in the steam delivery passage cannot pass through the switch valve, and then the steam in the steam generator can flow through the pressure relief valve and then enters the cooking cavity, so that the situation of pipeline burst is avoided, and the use safety is improved.

In one embodiment, the switch valve includes a solenoid valve, the solenoid valve includes a solenoid valve body and a solenoid switch member provided on the solenoid valve body, the solenoid valve body has a first passage therein, the first passage communicates with the steam delivery passage, the solenoid switch member is configured to control on/off of the first passage, an inlet of the pressure relief valve communicates with the first passage, and a portion of the first passage, which is used for communicating with the inlet of the pressure relief valve, is located upstream of the solenoid switch member.

In one embodiment, the outlet of the pressure relief valve is communicated with the first passage, and the position of the first passage communicated with the outlet of the pressure relief valve is located downstream of the electromagnetic switch.

In one embodiment, the electromagnetic valve body comprises a first air inlet pipe and a first air outlet pipe which are communicated with each other, the electromagnetic switch piece is arranged at a communication junction of the first air inlet pipe and the first air outlet pipe, a passage in the first air inlet pipe and a passage in the first air outlet pipe form the first passage, an inlet of the pressure release valve is communicated with the first air inlet pipe, and an outlet of the pressure release valve is communicated with the first air outlet pipe.

In one embodiment, the electromagnetic switch includes a magnetic core and an armature controlled by the magnetic core to move reciprocally, the armature is provided with a pressing plate, the pressing plate is located in the first passage, the armature is controlled by the magnetic core to move reciprocally to drive the pressing plate to move between an open position and a closed position, the pressing plate presses against and seals the port of the first air outlet pipe when located at the closed position, and the pressing plate is separated from or staggered with the port of the first air outlet pipe when located at the open position.

In one embodiment, two cooking cavities are further formed in the apparatus body, the steam delivery passage is communicated between each cooking cavity and the steam outlet of the steam generator, the number of the switch valves is two, the switch valves and the steam delivery passages are arranged in a one-to-one correspondence manner, and the pressure relief valve is controlled by at least the pressure of a portion, located between the steam generator and the switch valve, of one steam delivery passage to perform state switching.

In one embodiment, the two switch valves are connected into a whole.

In one embodiment, the equipment body comprises an upper cavity and a lower cavity which are sequentially arranged from top to bottom, one cooking cavity is formed in the upper cavity, the other cooking cavity is formed in the lower cavity, the length of the upper cavity is smaller than that of the lower cavity in the front-back direction, an installation space is formed on the rear side of the upper cavity and the upper side of the lower cavity, and the steam generator, the switch valve and the pressure release valve are all located in the installation space.

In one embodiment, the cooking apparatus further comprises a water tank in communication with the steam generator for providing water to the steam generator.

In one embodiment, the pressure relief valve comprises a pressure relief valve body, an elastic resetting piece and a pressure relief valve core, the pressure relief valve body is provided with a second passage, an inlet of the second passage is directly or indirectly communicated with a steam outlet of the steam generator, and an outlet of the second passage is directly or indirectly communicated with the cooking cavity;

the valve core of the pressure relief valve is movably arranged in the second passage, and when the pressure of the part, positioned between the steam generator and the switch valve, in the steam conveying passage is greater than the pressure relief pressure, the valve core of the pressure relief valve moves to the position where the second passage is communicated;

the elastic resetting piece acts between the valve core of the pressure relief valve and the valve body of the pressure relief valve and is used for providing resetting elastic force for the valve core of the pressure relief valve so that the valve core of the pressure relief valve can move to the position where the second passage is cut off.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of a cooking apparatus according to the present embodiment;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic structural view of the switching valve and the solenoid valve of the present embodiment when they are combined together;

FIG. 4 is an exploded view of the structure shown in FIG. 3;

FIG. 5 is a sectional view of the structure shown in FIG. 3, with the on-off valve in an open state;

FIG. 6 is a sectional view of the structure shown in FIG. 3, with the on-off valve in a closed state;

FIG. 7 is a cross-sectional view of the arrangement shown in FIG. 3 with the pressure relief valve in a closed condition;

fig. 8 is a cross-sectional view of the arrangement shown in fig. 3 with the pressure relief valve in an open state.

Description of reference numerals:

10. a cooking device; 11. an apparatus body; 111. an upper cavity; 112. a lower cavity; 113. a cooking cavity; 12. a steam generator; 13. an on-off valve; 131. a solenoid valve body; 1311. a first intake pipe; 1312. a first air outlet pipe; 132. an electromagnetic switching element; 1321. a magnetic core; 1322. an armature; 1323. pressing a plate; 14. a pressure relief valve; 141. a relief valve body; 142. an elastic reset member; 143. a valve core of the pressure relief valve; 144. a seal ring; 145. a convex ring; 146. a branch pipe; 15. a first pipeline A; 16. a second pipeline A; 17. a first pipeline B; 18. a second pipeline B; 19. a water tank.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

As shown in fig. 1, in one embodiment, there is provided a cooking apparatus 10 including an apparatus body 11, a steam generator 12, and an on-off valve 13.

The apparatus body 11 has a cooking cavity 113 formed therein. A steam delivery path is communicated between the steam outlet of the steam generator 12 and the cooking cavity 113. The on-off valve 13 is provided in the steam delivery path.

During normal use, if steam needs to be supplied to the cooking cavity 113, the steam generator 12 is started, the switch valve 13 is opened, and steam is delivered to the cooking cavity 113 through the steam delivery passage.

If it is not necessary to supply steam into the cooking cavity 113, the steam generator 12 is turned off, and the switching valve 13 is closed, and the steam delivery path is blocked.

In some cases, when the steam generator 12 is in an open state, steam is continuously delivered into the steam delivery path, and the on-off valve 13 is in a closed state due to a fault or other reasons of the on-off valve 13, the steam in the steam delivery path cannot be smoothly discharged, so that a pipe burst condition exists, and a certain potential safety hazard exists.

Based on this, as shown in fig. 1 and 2, a pressure relief valve 14 is further provided in the cooking apparatus 10. The inlet of the pressure relief valve 14 is directly or indirectly communicated with the steam outlet of the steam generator 12, and the outlet of the pressure relief valve 14 is directly or indirectly communicated with the cooking cavity 113.

The relief valve 14 is switched in state by being controlled by the pressure in the portion of the steam delivery path between the steam generator 12 and the on-off valve 13. In other words, the trigger condition for the state switching of the relief valve 14 is the pressure in the portion of the steam delivery path between the steam generator 12 and the on-off valve 13.

When the switch valve 13 is in a closed state due to a fault of the switch valve 13 or other reasons, and the steam in the steam delivery path cannot pass through the switch valve 13, along with the increase of the pressure in the steam delivery path, when the pressure is increased to a certain value, the pressure release valve 14 is triggered to open, so that the steam in the steam generator 12 can flow through the pressure release valve 14 and then enter the cooking cavity 113, thereby avoiding the occurrence of a pipe burst and improving the safety of use.

Moreover, the relief valve 14 is opened to deliver the steam originally intercepted by the on-off valve 13 in the steam delivery path to the cooking cavity 113, so that the cooking device 10 can be ensured to perform a steaming function normally when the on-off valve 13 fails.

As shown in fig. 1 and 2, the steam delivery path may be a path in a steam delivery line communicating between a steam outlet of the steam generator 12 and the cooking cavity 113. It is understood that the steam delivery line includes a first line communicating the steam outlet of the steam generator 12 with the on-off valve 13 and a second line communicating the on-off valve 13 with the cooking chamber 113. So that the on-off valve 13 can control the on-off of the steam delivery pipe.

As shown in fig. 3 to 6, in some embodiments, the switching valve 13 includes a solenoid valve including a solenoid valve body 131 and a solenoid switching member 132 provided to the solenoid valve body 131. The solenoid valve body 131 has therein a first passage that communicates in the vapor delivery passage. Specifically, in one embodiment, one end of the first passage communicates with the first pipe, and the other end of the first passage communicates with the second pipe.

The electromagnetic switch 132 is used for controlling the on-off of the first path. The inlet of the relief valve 14 communicates with the first passage, and a portion of the first passage for communicating with the inlet of the relief valve 14 is located upstream of the electromagnetic opening/closing member 132.

Alternatively, the inlet of the pressure relief valve 14 may be connected to the first pipeline. As long as the inlet communication position of the relief valve 14 is located upstream of the electromagnetic opening/closing member 132.

During normal use, when the steam generator 12 delivers steam into the steam delivery path, the electromagnetic switch 132 controls the first path to be conductive as shown in fig. 5; when the steam generator 12 stops the steam supply to the steam supply path, the electromagnetic switch 132 controls the first path to be cut off as shown in fig. 6.

When the switching valve 13 fails to open normally, the pressure in the steam delivery path upstream of the electromagnetic switch 132 increases as more and more steam is delivered from the steam generator 12 into the steam delivery path. When the pressure rises to the pressure relief pressure of the pressure relief valve 14, the pressure relief valve 14 is opened, and the steam in the steam delivery passage upstream of the electromagnetic switch member 132 is relieved from the pressure relief valve 14 into the cooking cavity 113, so that the phenomenon of pipe bursting in the cooking device 10 is avoided.

More specifically, the outlet of the relief valve 14 communicates with the first passage, and a portion of the first passage that communicates with the outlet of the relief valve 14 is located downstream of the electromagnetic opening/closing member 132.

Alternatively, the outlet of the pressure relief valve 14 may be directly connected to the second pipeline.

In this way, when the pressure relief valve 14 is opened to relieve the pressure due to the excessive pressure in the steam delivery path, the steam passing through the pressure relief valve 14 enters the cooking cavity 113 along the second pipeline.

It can be understood that the pressure release valve 14 and the switch valve 13 are in a parallel relation, and when the switch valve 13 fails and cannot work normally, the pressure release valve 14 is opened, so that normal implementation of a steaming function is ensured, and the occurrence of a pipeline burst condition is avoided.

As shown in fig. 3 to 8, in some embodiments, the solenoid valve body 131 includes a first intake pipe 1311 and a first outlet pipe 1312 that communicate with each other, and a passage in the first intake pipe 1311 and a passage in the first outlet pipe 1312 constitute the first passage. In one embodiment, the first inlet 1311 is in communication with the first line and the first outlet 1312 is in communication with the second line.

The electromagnetic switch 132 is disposed at the junction where the first air inlet pipe 1311 and the first air outlet pipe 1312 communicate. An inlet of the pressure relief valve 14 is communicated with the first air inlet pipe 1311, and an outlet of the pressure relief valve 14 is communicated with the first air outlet pipe 1312.

As shown in fig. 3 to 8, the first intake pipe 1311 is provided with a branch pipe 146 communicating therewith, and the inlet of the relief valve 14 communicates with this branch pipe 146. A branch pipe 146 is provided on the first air outlet pipe 1312 and is communicated with the first air outlet pipe, and the outlet of the pressure relief valve 14 is communicated with the branch pipe 146. The electromagnetic switch 132 is located between the two branch pipes 146, when the electromagnetic switch 132 fails to allow the first air inlet pipe 1311 to communicate with the first air outlet pipe 1312 due to a fault, the pressure relief valve 14 is opened, and the steam passes through the first air inlet pipe 1311, one branch pipe 146, the pressure relief valve 14, the other branch pipe 146 and the first air outlet pipe 1312 in sequence and finally enters the cooking cavity 113.

As shown in fig. 5 and 6, the electromagnetic switching element 132 includes a magnetic core 1321 and an armature 1322 controlled to reciprocate by the magnetic core 1321. The armature 1322 is provided with a pressure plate 1323, the pressure plate 1323 being located in the first passage. The armature 1322 is controlled by the core 1321 to reciprocate, which moves the pressure plate 1323 between an open position and a closed position. The pressure plate 1323 abuts against and closes the port of the first outlet pipe 1312 when in the closed position, and the pressure plate 1323 is separated or staggered from the port of the first outlet pipe 1312 when in the open position.

Specifically, as shown in fig. 5 and 6, in an embodiment, the pressure plate 1323 is opposite to the port of the first air outlet pipe 1312, the pressure plate 1323 is disc-shaped, and the diameter of the pressure plate 1323 is larger than the caliber of the port of the first air outlet pipe 1312.

When the clamp 1323 is in the open position, as shown in FIG. 5, the clamp 1323 is spaced from the port of the first outlet conduit 1312. The first air inlet pipe 1311 and the first air outlet pipe 1312 are communicated through the position of the pressing plate 1323.

As shown in fig. 6, when the pressure plate 1323 is in the closed position, the pressure plate 1323 presses against and closes the port of the first air outlet pipe 1312, and the first air inlet pipe 1311 and the first air outlet pipe 1312 cannot be communicated with each other. And only when the pressure relief valve 14 is opened, the first air inlet pipe 1311 and the first air outlet pipe 1312 can be communicated through the pressure relief valve 14.

Further, as shown in fig. 1, in some embodiments, two cooking cavities 113 are further formed in the apparatus body 11, the steam delivery path is communicated between each cooking cavity 113 and the steam outlet of the steam generator 12, there are two switching valves 13, and the switching valves 13 are disposed in one-to-one correspondence with the steam delivery paths. Both cooking chambers 113 may be supplied with steam for a steaming function.

As shown in fig. 1 to 8, the relief valve 14 is switched in state by being controlled by at least the pressure in a portion of one of the steam delivery passages between the steam generator 12 and the on-off valve 13.

As shown in fig. 1 to 8, in an embodiment, only one of the steam delivery passages corresponds to the pressure relief valve 14, and the other steam delivery passage does not correspond to the pressure relief valve 14.

Of course, alternatively, one pressure relief valve 14 may be provided for each of the two steam delivery passages, as required.

As shown in fig. 3 to 8, when the cooking apparatus 10 includes two on-off valves 13, the two on-off valves 13 may be connected as a single body.

Specifically, as shown in fig. 3 to 8, the solenoid valve bodies 131 included in the two switching valves 13 are integrally formed together. For example, may be integrally injection molded together.

The two cooking chambers 113 included in the cooking apparatus 10 may be sequentially arranged in the up-down direction. Of course, they may be arranged in the front-rear direction or in the other direction.

For example, as shown in fig. 1, the apparatus body 11 includes an upper cavity 111 and a lower cavity 112 sequentially arranged from top to bottom, one cooking cavity 113 is formed in the upper cavity 111, and the other cooking cavity 113 is formed in the lower cavity 112.

The first pipeline included in the steam delivery pipeline corresponding to the upper cavity 111 is a first pipeline a15, and the second pipeline included in the steam delivery pipeline is a second pipeline a 16. The first pipe included in the steam delivery pipe corresponding to the lower chamber 112 is a first pipe B17, and the second pipe included in the steam delivery pipe is a second pipe B18.

As shown in fig. 1, the length of the upper chamber 111 is smaller than the length of the lower chamber 112 in the front-rear direction, and an installation space is formed at the rear side of the upper chamber 111 and the upper side of the lower chamber 112, in which the steam generator 12, the opening and closing valve 13, and the relief valve 14 are located.

Further, as shown in fig. 1, the cooking apparatus 10 further includes a water tank 19, and the water tank 19 is communicated with the steam generator 12 for supplying water to the steam generator 12.

Specifically, as shown in fig. 1, in some embodiments, the water tank 19 and the upper chamber 111 are sequentially arranged in the left-right direction.

Further specifically, as shown in fig. 7 and 8, in some embodiments, the relief valve 14 includes a relief valve body 141, an elastic reset member 142 and a relief valve spool 143, the relief valve body 141 has a second passage therein, an inlet of the second passage is directly or indirectly communicated with the steam outlet of the steam generator 12, and an outlet of the second passage is directly or indirectly communicated with the cooking cavity 113.

Specifically, as shown in fig. 7 and 8, in one embodiment, the inlet of the second passage communicates with the first inlet pipe 1311, and the outlet of the second passage communicates with the first outlet pipe 1312.

More specifically, the inlet of the second passage communicates with the branch pipe 146 on the first intake pipe 1311, and the outlet of the second passage communicates with the branch pipe 146 on the first outlet pipe 1312.

Further, as shown in fig. 8, the relief valve spool 143 is movably disposed in the second passage, and when the pressure of a portion of the steam delivery passage between the steam generator 12 and the on-off valve 13 is greater than the relief pressure, the relief valve spool 143 moves to a position where the second passage is open.

As shown in fig. 7, the elastic restoring member 142 acts between the relief valve spool 143 and the relief valve body 141 to provide a restoring elastic force to the relief valve spool 143, so that the relief valve spool 143 can move to a position where the second passage is blocked.

When the pressure relief valve 14 is opened, the pressure in the steam delivery passage gradually decreases, and when the pressure decreases to a certain value, the pressure relief valve spool 143 is reset by the elastic reset piece 142, so that the second passage is closed.

Further, a convex ring 145 is arranged on the inner wall surface of the second passage, and a sealing ring 144 is arranged on the outer periphery of the relief valve spool 143. Under the action of the elastic resetting member 142, the relief valve spool 143 can move to the position where the sealing ring 144 abuts against the convex ring 145, and the relief valve spool 143 closes the second passage.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A cooking apparatus, characterized by comprising:

an apparatus body having a cooking cavity formed therein;

a steam delivery passage is communicated between a steam outlet of the steam generator and the cooking cavity;

a switching valve provided in the steam delivery passage;

and an inlet of the pressure relief valve is directly or indirectly communicated with a steam outlet of the steam generator, an outlet of the pressure relief valve is directly or indirectly communicated with the cooking cavity, and the pressure relief valve is controlled by the pressure of a part, positioned between the steam generator and the switch valve, of the steam delivery passage to perform state switching.

2. The cooking apparatus according to claim 1, wherein the switch valve includes a solenoid valve, the solenoid valve includes a solenoid valve body and a solenoid switch member provided on the solenoid valve body, the solenoid valve body has a first passage therein, the first passage communicates with the steam delivery passage, the solenoid switch member is configured to control on/off of the first passage, an inlet of the pressure relief valve communicates with the first passage, and a portion of the first passage for communicating with the inlet of the pressure relief valve is located upstream of the solenoid switch member.

3. The cooking apparatus according to claim 2, wherein an outlet of the pressure relief valve communicates with the first passage, and a portion of the first passage that communicates with the outlet of the pressure relief valve is located downstream of the electromagnetic opening/closing member.

4. The cooking apparatus according to claim 3, wherein the electromagnetic valve body comprises a first air inlet pipe and a first air outlet pipe which are communicated with each other, the electromagnetic switch member is arranged at a junction where the first air inlet pipe is communicated with the first air outlet pipe, a passage in the first air inlet pipe and a passage in the first air outlet pipe form the first passage, an inlet of the pressure release valve is communicated with the first air inlet pipe, and an outlet of the pressure release valve is communicated with the first air outlet pipe.

5. The cooking apparatus according to claim 4, wherein the electromagnetic switch member includes a magnetic core and an armature controlled by the magnetic core to move back and forth, the armature is provided with a pressing plate, the pressing plate is located in the first passage, the armature is controlled by the magnetic core to move back and forth to drive the pressing plate to move between an open position and a closed position, the pressing plate abuts against and seals the port of the first outlet pipe when located in the closed position, and the pressing plate is separated from or staggered from the port of the first outlet pipe when located in the open position.

6. The cooking apparatus according to any one of claims 1 to 5, wherein two cooking chambers are further formed in the apparatus body, the steam delivery passage communicates with each of the cooking chambers and the steam outlet of the steam generator, the number of the switching valves is two, the switching valves are arranged in one-to-one correspondence with the steam delivery passages, and the pressure relief valve is controlled by at least the pressure of a portion of one of the steam delivery passages located between the steam generator and the switching valve to perform state switching.

7. The cooking apparatus according to claim 6, wherein the two switching valves are connected as a single body.

8. The cooking apparatus according to claim 6, wherein the apparatus body includes an upper chamber and a lower chamber which are sequentially arranged from top to bottom, one cooking chamber is formed in the upper chamber, the other cooking chamber is formed in the lower chamber, the length of the upper chamber is smaller than that of the lower chamber in the front-rear direction, an installation space is formed on the rear side of the upper chamber and the upper side of the lower chamber, and the steam generator, the switching valve and the pressure release valve are all located in the installation space.

9. The cooking apparatus according to any one of claims 1 to 5, further comprising a water tank in communication with the steam generator for providing water to the steam generator.

10. The cooking apparatus according to any one of claims 1 to 5, wherein the pressure relief valve comprises a pressure relief valve body, an elastic reset member and a pressure relief valve spool, the pressure relief valve body having a second passage therein, an inlet of the second passage being in direct or indirect communication with the steam outlet of the steam generator, an outlet of the second passage being in direct or indirect communication with the cooking chamber;

the valve core of the pressure relief valve is movably arranged in the second passage, and when the pressure of the part, positioned between the steam generator and the switch valve, in the steam conveying passage is greater than the pressure relief pressure, the valve core of the pressure relief valve moves to the position where the second passage is communicated;

the elastic resetting piece acts between the valve core of the pressure relief valve and the valve body of the pressure relief valve and is used for providing resetting elastic force for the valve core of the pressure relief valve so that the valve core of the pressure relief valve can move to the position where the second passage is cut off.

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