CN215533583U - Steaming and baking integrated machine - Google Patents

Abstract

The utility model relates to a steaming and baking integrated machine, which comprises a liner with an exhaust port, wherein an exhaust channel with an exhaust fan is arranged above the liner, the exhaust port comprises a first exhaust port arranged on a liner back plate and a second exhaust port arranged on a liner top plate and capable of being opened and closed, the exhaust fan is arranged at an air inlet end of the exhaust channel and comprises a volute cavity and an impeller arranged in the volute cavity, a first air inlet and a second air inlet are respectively arranged on the cavity wall of the volute cavity, the first air inlet is communicated with the first exhaust port in a fluid mode, a first vent capable of being opened and closed is arranged on the exhaust channel, the first vent is communicated with the second exhaust port through an air guide pipe, an air guide port is arranged on the pipe wall of the air guide pipe, and the air guide port is communicated with the second air inlet in a fluid mode. Compared with the prior art, the utility model can realize professional steaming, professional baking and forced exhaust of residual gas in the liner after cooking.

Description

Steaming and baking integrated machine

Technical Field

The utility model relates to the field of cooking devices, in particular to a steaming and baking integrated machine.

Background

The steaming and baking integrated machine is a cooking device with steaming and baking functions, the steaming and baking functions of the traditional steaming and baking integrated machine are carried out in the same inner container, only one air outlet is formed in the inner container, namely, in the steaming and baking process, hot air in the inner container is discharged outwards through the air outlet. The exhaust port is generally a round hole with a fixed size, and hot air in the liner is exhausted into an exhaust passage above the liner through an exhaust pipe externally connected to the exhaust port. For example, chinese patent application No. CN201910454720.8 (publication No. CN112006553A) discloses an all-in-one steaming and baking machine, which includes an inner container and a heat dissipation channel, wherein an air outlet is formed in a wall of the inner container, and the air outlet is in fluid communication with an air inlet on the heat dissipation channel.

In the existing steaming and baking integrated machine, steam in the inner container needs to be discharged as slowly as possible during the steaming function, so that the steam can be fully subjected to heat exchange with food to be steamed, the steaming efficiency is improved, and the steam generated during the baking function needs to be discharged as quickly as possible, so that the baking effect is ensured. However, the design of single exhaust port makes present steaming and baking all-in-one can't adjust the exhaust velocity of inner bag according to the culinary art mode of difference in culinary art process, and then makes present steaming and baking all-in-one can't reach the culinary art effect that professional was baked and professional was steamed. In addition, after the culinary art was finished, because the design of single exhaust port, remaining a large amount of gases (especially after steaming) in steaming and baking the inner bag of all-in-one, the user has a large amount of steam or flue gas to directly spout the user in the twinkling of an eye that the user opened the door, seriously influences user's use and experiences.

Disclosure of Invention

The utility model aims to solve the first technical problem of providing a steaming and baking integrated machine with high exhaust efficiency aiming at the prior art.

The second technical problem to be solved by the utility model is to provide a steaming and baking integrated machine with good cooking effect aiming at the prior art.

The third technical problem to be solved by the utility model is to provide a steaming and baking all-in-one machine which can avoid direct hot air injection when a door is opened, aiming at the prior art.

The technical scheme adopted by the utility model for solving at least one technical problem is as follows: a steaming and baking integrated machine comprises a liner with an exhaust port, wherein an exhaust channel with an exhaust fan is arranged above the liner, and the steaming and baking integrated machine is characterized in that the exhaust port comprises a first exhaust port arranged on a liner back plate and a second exhaust port arranged on a liner top plate and capable of being opened and closed, the exhaust fan is arranged at an air inlet end of the exhaust channel and comprises a volute cavity and an impeller arranged in the volute cavity, a first air inlet and a second air inlet are respectively formed in the cavity wall of the volute cavity, the first air inlet is communicated with the first exhaust port in a fluid mode, a first vent capable of being opened and closed is formed in the exhaust channel, the first vent is communicated with the second exhaust port through an air guide pipe, an air guide port is formed in the pipe wall of the air guide pipe, and the air guide port is communicated with the second air inlet in a fluid mode.

Further, an upper mounting plate is horizontally arranged above the inner container, a mounting gap is formed between the upper mounting plate and the top surface of the inner container, an air guide cover and a volute cover are respectively covered on the upper surface of the upper mounting plate, the air guide cover, the volute cover and the upper surface of the upper mounting plate respectively enclose the exhaust channel and the volute cavity, the first air inlet, the second air inlet and the first vent are respectively arranged on the upper mounting plate, an upper exhaust cover and a lower exhaust cover are respectively covered on the second air outlet and the first vent, and the upper exhaust cover and the lower exhaust cover can respectively move up and down relative to the second air outlet and the first vent to respectively open and close the second air outlet and the first vent. Through exhaust cover and lower exhaust cover in setting up, reciprocate through this exhaust cover and lower exhaust cover simultaneously, can realize opening and close first vent and second gas vent respectively to through set up exhaust cover down on the second gas vent and can carry out the slow flow to the outer speed of second gas vent department air current, avoid the air current velocity of flow too fast and influence the effect of toasting, further promote the effect of toasting.

Furthermore, the first ventilation opening and the second exhaust opening are arranged oppositely up and down, the air guide pipe extends vertically, and the upper exhaust cover and the lower exhaust cover can respectively cover and seal the upper ends of the first ventilation opening and the second exhaust opening. Thereby can promote the exhaust efficiency of second gas vent department to enable last exhaust cover and lower exhaust cover and realize opening and close first vent and second gas vent better.

And the clutch assembly is used for controlling the linkage or disconnection of the upper exhaust cover and the lower exhaust cover. The clutch assembly can control the relative linkage relation between the upper exhaust cover and the lower exhaust cover, when the clutch assembly realizes the linkage between the upper exhaust cover and the lower exhaust cover, the upper exhaust cover and the lower exhaust cover can be linked up and down through the driving device, and when the upper exhaust cover and the lower exhaust cover are separated through the clutch assembly, the state that the second exhaust port is opened and the first vent port is closed can be realized.

Further, the upper exhaust cover and the lower exhaust cover are disc-shaped in appearance, the driving device is installed on the top surface of the air guide cover, an output shaft of the driving device vertically penetrates through the air guide cover and extends into the air guide pipe through the first vent, the output shaft extends along the direction of a central shaft of the air guide pipe, the end part of the output shaft is fixed with the center of the top part of the lower exhaust cover, a connecting hole is formed in the center of the upper exhaust cover, a connecting sleeve positioned at the top part of the upper exhaust cover is connected onto the connecting hole, the upper exhaust cover is connected onto the output shaft through the connecting hole and the connecting sleeve, the inner circumferential surface of the upper end of the connecting sleeve is recessed downwards along the circumferential direction to form a clutch step, the clutch assembly comprises a first clutch block and a second clutch block which are fixed on the output shaft at an upper-lower interval, and the first clutch block and the second clutch block are circular in appearance, the upper exhaust cover can move back and forth between the first clutch block and the second clutch block along the output shaft, wherein the first clutch block is positioned at the upper end of the connecting sleeve, the first clutch block can move up and down along the inner cavity at the upper end of the connecting sleeve and is abutted against the clutch ring steps, the second clutch block is positioned below the upper exhaust cover and is abutted against the bottom of the lower exhaust cover, the upper end of the output shaft is sleeved with a spring, the spring is clamped between the bottom of the shell of the driving device and the upper end of the connecting sleeve and enables the upper exhaust cover to have the trend of moving downwards along the output shaft, when the first clutch block is abutted against the clutch ring steps, the upper exhaust cover can move downwards synchronously with the lower exhaust cover, and when the second clutch block is abutted against the upper exhaust cover, the upper exhaust cover can move upwards synchronously with the lower exhaust cover, when the upper exhaust cover and the lower exhaust cover respectively cover the first ventilation opening and the second exhaust opening, the second clutch block is separated from the bottom of the upper exhaust cover, and when the second clutch block abuts against the bottom of the upper exhaust cover, the lower exhaust cover is separated from the second exhaust opening and the upper exhaust cover covers the first ventilation opening. Thereby, the following states of the first vent and the second exhaust port can be achieved: the first vent and the second exhaust port are closed simultaneously (exhaust is performed only through the first exhaust port at this time); the first vent and the second vent are opened simultaneously (at the same time, the air is exhausted through the first vent and the second vent simultaneously); the first vent is closed and the second vent is opened, so that the gas in the inner container is forcibly exhausted.

Further, last exhaust cover includes discoid last lid and last sealed cowling, and this last sealed cowling includes the sealing washer of cladding on the perisporium of last lid and covers the closing plate on the bottom surface of above-mentioned last lid to enable last exhaust cover better seal first vent, and the center department of this closing plate sets up the breach that the aperture is greater than above-mentioned first clutch piece, and this first clutch piece holding is in this breach, because last sealed cowling generally adopts elastic material, if can influence the linkage nature between output shaft and the last exhaust cover with the direct counterbalance of the closing plate of last sealed cowling, and can lead the removal of going up the exhaust cover along the output shaft through holding first clutch piece in the breach, realize the counterbalance and the separation of first clutch piece and last lid bottom better.

Further, the lower exhaust cover comprises a disc-shaped lower cover body and a lower sealing cover, and the lower sealing cover is covered on the peripheral wall and the bottom surface of the lower cover body, so that the lower exhaust cover can better seal the second exhaust port.

Furthermore, the aperture of the second exhaust port and the aperture of the air guide port are smaller than that of the first ventilation port. On the one hand, the gas in the inner bag can take place to slow down in getting into the air duct inner chamber that the space is great relatively by the less second gas vent in aperture to avoid exhaust velocity too fast and influence the homogeneity of inner bag temperature field, on the other hand, under the state that first vent and second gas vent are opened simultaneously, the gas that gets into the air duct can mostly directly get into exhaust passage through first vent and arrange outward, thereby improves exhaust efficiency.

Further, the second air inlet is arranged opposite to the wheel shaft of the impeller, so that the negative pressure value at the second air inlet is large, and then gas in the inner container can enter the volute cavity through the second air inlet more quickly under a forced exhaust state, and then is exhausted outside through the exhaust channel.

Furthermore, the upper mounting plate below the impeller is recessed downward to form an inverted conical air inlet cavity coaxial with the impeller, and the second air inlet is arranged at the center of the air inlet cavity. The negative pressure value at the second air inlet is further increased, and the forced exhaust efficiency is further increased.

Further, the impeller comprises an upper wheel body and a lower wheel body which are coaxially arranged from top to bottom, an upper air inlet which is opposite to the upper wheel body from top to bottom is formed in the volute casing, and the lower wheel body is opposite to the air inlet cavity from top to bottom. When the impeller rotates like this, can form the negative pressure in second inlet port department through the rotation of lower wheel body, and can form the negative pressure in last air inlet department through the rotation of last wheel body, and then make the inside hot-air of the roast all-in-one that evaporates of upper mounting panel top can get into the volute chamber through last air inlet, arrange through exhaust passage outward after that to play the effect to the inside heat dissipation cooling of roast all-in-one that evaporates, avoid the inside high temperature of machine and influence the performance.

Further, the driving device is a thermal expansion type telescopic rod, when the thermal expansion type telescopic rod is electrified and heated, the output shaft extends downwards, and after the thermal expansion type telescopic rod is cooled after power failure, the output shaft retracts upwards.

Compared with the prior art, the utility model has the advantages that: the first vent and the second vent can be opened and closed (in the working process, the first vent is always in a normally open state), so that in the steaming mode, the second vent is closed, the outward discharging speed of steam in the liner can be effectively reduced, enough steam is left in the liner to fully perform heat exchange with food, the steaming effect of the steaming and baking integrated machine is improved, professional steaming and baking are realized, in the baking mode, the first vent and the second vent are simultaneously opened, hot gas (including steam, smoke and the like) in the liner can be simultaneously discharged through the first vent and the second vent, the baking effect is prevented from being influenced due to the fact that the steam is retained in the liner, the baking effect of the steaming and baking integrated machine is improved, and professional baking is realized. In addition, after the culinary art is finished, first vent is closed and the second gas vent is opened, under exhaust fan's suction effect, the inside vacuum negative pressure that realizes fast of guide duct, during residual gas in the inner bag is inhaled the guide duct fast, gets into the volute chamber through the guide duct after that, gets into exhaust passage outward at last under the effect of the centrifugal force of impeller, realizes discharging residual gas's in the inner bag by force, when avoiding culinary art to finish, the user opens the door body, the steam in the inner bag is directly spouted the user.

Drawings

FIG. 1 is a cross-sectional view of a steaming and baking integrated machine according to an embodiment of the present invention;

FIG. 2 is a schematic view of a partial structure of the steaming and baking integrated machine according to the embodiment of the present invention;

FIG. 3 is a partial cross-sectional view of the steaming and baking integrated machine in an embodiment of the present invention (in forced-ventilated mode);

FIG. 4 is a partial cross-sectional view of the steaming and baking integrated machine in another state (in a baking mode) according to the embodiment of the present invention;

FIG. 5 is another schematic partial structure diagram of the steaming and baking integrated machine according to the embodiment of the present invention;

fig. 6 is a cross-sectional view of fig. 5.

Detailed Description

The utility model is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 6, an integrated steaming and baking machine includes a liner 1 having an air outlet, and an air exhaust channel 30 having an air exhaust fan is disposed above the liner 1. In this embodiment, the exhaust port includes a first exhaust port 11 disposed on a back plate of the liner 1 and a second exhaust port 12 disposed on a top plate of the liner 1 and capable of being opened and closed, the exhaust fan is disposed at an air inlet end of the exhaust passage 30 and includes a volute cavity 40 and an impeller 41 mounted in the volute cavity 40, a first air inlet 21 and a second air inlet 22 are respectively disposed on a cavity wall of the volute cavity 40, the first air inlet 21 is in fluid communication with the first exhaust port 11, a first vent 23 capable of being opened and closed is disposed on the exhaust passage 30, the first vent 23 is in communication with the second exhaust port 12 through an air guide pipe 5, an air guide opening 51 is disposed on a pipe wall of the air guide pipe 5, and the air guide opening 51 is in fluid communication with the second air inlet 22.

It is from top to bottom seen, above-mentioned first vent and second gas vent 12 can be opened and close (in the working process, first gas vent 11 is in normally open state all the time), like this under the mode of steaming, close second gas vent 12, thereby can effectively reduce the outer discharge speed of steam in inner bag 1, make abundant steam stay in inner bag 1 fully take place the heat exchange with food, promote the steaming effect of steaming and baking all-in-one, realize professional steaming, under the roast mode, open first vent and second gas vent 12 simultaneously, steam (including steam and flue gas etc.) can be discharged through first gas vent 11 and second gas vent 12 simultaneously in inner bag 1 like this, avoid steam to stay in inner bag 1 and influence the effect of baking, promote the effect of baking of steaming and baking all-in-one, realize professional baking. In addition, after cooking is finished, the first vent 23 is closed, the second exhaust port 12 is opened, vacuum negative pressure is quickly realized in the air guide pipe 5 under the suction action of the exhaust fan, residual gas in the inner container 1 is quickly sucked into the air guide pipe 5, then the residual gas enters the volute cavity 40 through the air guide port 51, finally the residual gas enters the exhaust channel 30 under the action of centrifugal force of the impeller 41 and is discharged outwards, forced discharge of the residual gas in the inner container 1 is realized, and when a user opens a door body after cooking is finished, hot gas in the inner container 1 is prevented from being directly injected to the user.

Specifically, an upper mounting plate 2 is horizontally disposed above the inner container 1, a mounting gap 10 is formed between the upper mounting plate 2 and the top surface of the inner container 1, an air guide cover 3 and a volute cover 4 are respectively covered on the upper surface of the upper mounting plate 2, the air guide cover 3, the volute cover 4 and the upper surface of the upper mounting plate 2 respectively enclose the exhaust channel 30 and the volute cavity 40, the first air inlet 21, the second air inlet 22 and the first vent 23 are respectively opened on the upper mounting plate 2, an upper exhaust cover 71 and a lower exhaust cover 72 are respectively covered on the second exhaust port 12 and the first vent 23, and the upper exhaust cover 71 and the lower exhaust cover 72 can respectively move up and down relative to the second exhaust port 12 and the first vent 23 to respectively open and close the second exhaust port 12 and the first vent 23. Through setting up exhaust cover 71 and lower exhaust cover 72 on and, simultaneously through this up exhaust cover 71 and the up-down movement of lower exhaust cover 72, can realize opening and close first vent 23 and second gas vent 12 respectively to through set up exhaust cover 72 down on second gas vent 12 and can carry out the slow flow to the outer discharge velocity of second gas vent 12 department air current, avoid the air current velocity of flow too fast and influence the effect of toasting, further promote the effect of toasting. Preferably, in this embodiment, the first ventilation opening 23 and the second exhaust opening 12 are disposed opposite to each other, the air guiding pipe 5 extends vertically, and the upper exhaust cover 71 and the lower exhaust cover 72 can cover and seal the upper ends of the first ventilation opening 23 and the second exhaust opening 12 respectively, so as to improve the exhaust efficiency at the second exhaust opening 12, and enable the upper exhaust cover 71 and the lower exhaust cover 72 to open and close the first ventilation opening 23 and the second exhaust opening 12 better. The first intake port 21 and the first exhaust port 11 communicate with each other through an exhaust pipe 91, and the air guide port 51 and the second intake port 22 communicate with each other through an intake pipe 92 provided in the attachment gap 10.

Further, in the present embodiment, the lower end of the air guiding pipe 5 is disposed around the outer circumference of the second exhaust port 12, and the upper end of the air guiding pipe 5 is disposed through the first ventilation opening 23, that is, the aperture of the first ventilation opening 23 is equal to the pipe diameter of the air guiding pipe 5, the aperture of the second exhaust port 12 is smaller than the pipe diameter of the air guiding pipe 5, and the aperture of the air guiding opening 51 is also smaller than the first ventilation opening 23. On the one hand, the gas in the inner container 1 enters the inner cavity of the air guide pipe 5 with relatively large space from the second air outlet 12 with small aperture and can be decelerated, so that the phenomenon that the uniformity of the temperature field of the inner container 1 is influenced due to the over-quick exhaust speed is avoided, and on the other hand, under the state that the first air vent 23 and the second air outlet 12 are simultaneously opened, the gas entering the air guide pipe 5 can mostly directly enter the exhaust channel 30 to be discharged outwards through the first air vent 23, so that the exhaust efficiency is improved.

Further, in this embodiment, the second air inlet 22 is disposed opposite to the axle of the impeller 41, so that the negative pressure value at the second air inlet 22 is relatively large, and in the forced exhaust state, the gas in the inner container 1 can more rapidly enter the volute cavity 40 through the second air inlet 22, and is further discharged outside through the exhaust passage 30. Preferably, the upper mounting plate 2 below the impeller 41 is recessed downward to form an inverted conical intake chamber 24 coaxial with the impeller 41, and the second intake port 22 is opened at the center of the intake chamber 24. The negative pressure value at the second intake port 22 is further increased, and the forced exhaust efficiency is further increased.

In addition, in the present embodiment, the impeller 41 includes an upper impeller body 411 and a lower impeller body 412 that are coaxially disposed up and down, the volute casing 4 is opened with an upper air inlet 42 that is vertically opposite to the upper impeller body 411, and the lower impeller body 412 is vertically opposite to the air inlet cavity 24. When the impeller 41 rotates, negative pressure can be formed at the second air inlet 22 through the rotation of the lower wheel body 412, and negative pressure can be formed at the upper air inlet 42 through the rotation of the upper wheel body 411, so that hot air inside the steaming and baking all-in-one machine above the upper mounting plate 2 can enter the volute cavity 40 through the upper air inlet 42 and then is discharged outside through the exhaust passage 30, thereby playing a role in dissipating heat and cooling the inside of the steaming and baking all-in-one machine, and avoiding the influence on the performance due to overhigh temperature inside the machine.

Further, the steaming and baking integrated machine of the utility model also comprises a driving device 6 for driving the lower exhaust cover 72 to move up and down, and a clutch component for controlling the upper exhaust cover 71 to be linked or disconnected with the lower exhaust cover 72. The relative linkage relation between the upper exhaust cover 71 and the lower exhaust cover 72 can be controlled by the clutch assembly, when the upper exhaust cover 71 and the lower exhaust cover 72 are linked by the clutch assembly, the upper exhaust cover 71 and the lower exhaust cover 72 can be linked up and down by the driving device 6, and when the upper exhaust cover 71 and the lower exhaust cover 72 are separated by the clutch assembly, the state that the second exhaust port 12 is opened and the first vent 23 is closed can be realized.

Still further, in the present embodiment, the upper exhaust cover 71 and the lower exhaust cover 72 are both disc-shaped in shape, the driving device 6 is installed on the top surface of the air guiding cover 3, the output shaft 61 of the driving device 6 vertically penetrates through the air guiding cover 3 and extends into the air guiding pipe 5 through the first vent 23, the output shaft 61 extends along the central axis direction of the air guiding pipe 5, the end of the output shaft 61 is fixed to the center of the top of the lower exhaust cover 72, a connecting hole 710 is formed in the center of the upper exhaust cover 71, a connecting sleeve 73 located at the top of the upper exhaust cover 71 is connected to the connecting hole 710, the upper exhaust cover 71 is connected to the output shaft 61 through the connecting hole 710 and the connecting sleeve 73, and the inner circumferential surface of the connecting sleeve 73 is recessed downward along the circumferential direction to form a clutch ring step 731, the clutch assembly includes a first clutch block 81 and a second clutch block 82 which are fixed to the upper end of the output shaft 61 at an upper and lower interval, the first clutch block 81 and the second clutch block 82 are circular in shape, the upper exhaust cover 71 can move back and forth between the first clutch block 81 and the second clutch block 82 along the output shaft 61, wherein the first clutch block 81 is located at the upper end of the connecting sleeve 73, the first clutch block 81 can move up and down along the inner cavity at the upper end of the connecting sleeve 73 and abut against the clutch ring step 731, the second clutch block 82 is located below the upper exhaust cover 71 and abuts against the bottom of the lower exhaust cover 72, the upper end of the output shaft is sleeved with a spring 74, the spring 74 is clamped between the bottom of the housing of the driving device 6 and the upper end of the connecting sleeve 73, the upper exhaust cover 71 has a tendency of moving down along the output shaft 61, and when the first clutch block 81 abuts against the clutch ring step 731, the upper exhaust cover 71 can move down synchronously with the lower exhaust cover 72, when the second clutch block 82 abuts against the upper exhaust cover 71, the upper exhaust cover 71 can move upwards synchronously with the lower exhaust cover 72, when the upper exhaust cover 71 and the lower exhaust cover 72 cover the first vent 23 and the second vent 12 respectively, the second clutch block 82 is separated from the bottom of the upper exhaust cover 71, and when the second clutch block 82 abuts against the bottom of the upper exhaust cover 71, the lower exhaust cover 72 is separated from the second vent 12 and the upper exhaust cover 71 covers the first vent 23. The following states of the first vent 23 and the second exhaust port 12 can thereby be achieved: the first ventilation opening 23 is closed simultaneously with the second exhaust opening 12 (exhaust is performed only through the first exhaust opening 11); the first ventilation opening 23 is opened simultaneously with the second exhaust opening 12 (at this time, exhaust is performed simultaneously through the first exhaust opening 11 and the second exhaust opening 12); the first vent 23 is closed and the second vent 12 is opened, so that the gas in the liner 1 is forcibly exhausted.

Preferably, the upper exhaust cover 71 includes a disc-shaped upper cover 711 and an upper sealing cover 712, the upper sealing cover 712 includes a sealing ring 7121 covering the peripheral wall of the upper cover 711 and a sealing plate 7122 covering the bottom surface of the upper cover 711, thereby the upper exhaust cover 71 can better seal the first ventilation opening 23, and the center of the sealing plate 7122 is provided with a notch 71221 with the aperture larger than that of the first clutch block 81, the first clutch block 81 is accommodated in the gap 71221, since the upper sealing cover 712 is made of elastic material, if the first clutch block 81 is directly abutted against the sealing plate 7122 of the upper sealing cover 712, the linkage between the output shaft 61 and the upper exhaust cover 71 is affected, in addition, the first clutch block 81 is accommodated in the notch 71221, so that the movement of the upper exhaust cover 71 along the output shaft 61 can be guided, and the first clutch block 81 can be better abutted against and separated from the bottom of the upper cover body 711. The lower exhaust cover 72 includes a disc-shaped lower cover body 721 and a lower sealing cover 722, and the lower sealing cover 722 covers the peripheral wall and the bottom surface of the lower cover body 721, so that the lower exhaust cover 72 can better seal the second exhaust port 12.

In this embodiment, the driving device 6 is preferably a thermal expansion type telescopic rod, a rod portion of the thermal expansion type telescopic rod is the output shaft 61, and when the thermal expansion type telescopic rod is heated by power, the output shaft 61 extends downward, and after the power is cut off and the thermal expansion type telescopic rod is cooled, the output shaft 61 retracts upward, so that the upper exhaust cover 71 and the lower exhaust cover 72 are driven upward and downward.

The working process of the utility model is as follows:

in the steaming mode, the driving device 6 is electrified and heated, the output shaft 61 of the driving device 6 extends downwards, and the upper exhaust cover 71 covers and seals the first vent 23 (specifically, the upper port of the air guide pipe 5), at this time, the inner container 1 only discharges steam through the first vent 11, the steam discharging speed is slow, and enough steam is left in the inner container 1 for cooking food, so that professional steaming of the food is realized.

Under the roast mode, the cooling of above-mentioned drive arrangement 6 outage, drive arrangement 6's output shaft 61 is retracted upwards, and first vent 23 and second gas vent 12 are opened respectively, and steam and flue gas in the inner bag 1 can be simultaneously through first gas vent 11 and second gas vent 12 outer row this moment, and the outer row of gas speed in the inner bag 1 is very fast, avoids too much steam to remain in inner bag 1 and influences the effect of toasting, realizes that the specialty is toasted.

When cooking is finished, the driving device 6 drives the lower exhaust cover 72 to move upwards to be separated from the second exhaust port 12, at the moment, the second clutch block 82 is not abutted against the upper exhaust cover 71, therefore, the upper exhaust cover 71 still covers the first vent 23, under the action of negative pressure formed by rotation of the exhaust fan, residual gas in the liner 1 enters the inner cavity of the air guide pipe 5 through the second exhaust port 12, enters the volute cavity 40 through the air guide port 51 and is finally discharged outside through the exhaust channel 30, and when a user opens the door body, hot gas in the liner 1 is prevented from being directly injected to the user.

The term "fluid communication" as used herein refers to a spatial relationship between two components or portions (hereinafter collectively referred to as a first portion and a second portion, respectively), i.e., a fluid (gas, liquid or a mixture of both) can flow along a flow path from the first portion and/or be transported to the second portion, and may be a direct communication between the first portion and the second portion, or an indirect communication between the first portion and the second portion via at least one third element, such as a fluid channel, e.g., a pipe, a channel, a duct, a flow guide, a hole, a groove, or a chamber that allows a fluid to flow through, or a combination thereof.

Claims (12)

1. A steaming and baking integrated machine comprises a liner (1) with an exhaust port, an exhaust passage (30) with an exhaust fan is arranged above the liner (1), and the steaming and baking integrated machine is characterized in that the exhaust port comprises a first exhaust port (11) arranged on a back plate of the liner (1) and a second exhaust port (12) arranged on a top plate of the liner (1) and capable of being opened and closed, the exhaust fan is arranged at an air inlet end of the exhaust passage (30) and comprises a volute cavity (40) and an impeller (41) arranged in the volute cavity (40), a first air inlet (21) and a second air inlet (22) are respectively arranged on the cavity wall of the volute cavity (40), the first air inlet (21) is in fluid communication with the first exhaust port (11), a first vent (23) capable of being opened and closed is arranged on the exhaust passage (30), and the first vent (23) is communicated with the second exhaust port (12) through an air guide pipe (5), and the wall of the air guide pipe (5) is provided with an air guide opening (51), and the air guide opening (51) is communicated with the second air inlet (22) in a fluid mode.

2. The steaming and baking all-in-one machine as claimed in claim 1, wherein an upper mounting plate (2) is horizontally arranged above the inner container (1), a mounting gap (10) is formed between the upper mounting plate (2) and the top surface of the inner container (1), an air guide cover (3) and a volute cover (4) are respectively covered on the upper surface of the upper mounting plate (2), the air guide cover (3) and the volute cover (4) and the upper surface of the upper mounting plate (2) respectively enclose the exhaust channel (30) and the volute cavity (40), the first air inlet (21), the second air inlet (22) and the first ventilation opening (23) are respectively arranged on the upper mounting plate (2), an upper exhaust cover (71) and a lower exhaust cover (72) are respectively covered on the second air outlet (12) and the first ventilation opening (23), and the upper exhaust cover (71) and the lower exhaust cover (72) can respectively move up and down relative to the second air outlet (12) and the first ventilation opening (23) to move up and down to move down to form an exhaust cover (71) and a lower exhaust cover (72) The second exhaust port (12) and the first ventilation opening (23) are opened and closed respectively.

3. The steaming and baking all-in-one machine as claimed in claim 2, wherein the first ventilation opening (23) and the second exhaust opening (12) are arranged oppositely up and down, the air guide pipe (5) extends vertically, and the upper exhaust cover (71) and the lower exhaust cover (72) can respectively cover and seal the upper ends of the first ventilation opening (23) and the second exhaust opening (12).

4. The steaming and baking all-in-one machine as claimed in claim 3, further comprising a driving device (6) for driving the lower exhaust cover (72) to move up and down, and a clutch assembly for controlling the upper exhaust cover (71) to be linked with or disconnected from the lower exhaust cover (72).

5. The steaming and baking all-in-one machine as claimed in claim 4, wherein the upper exhaust cover (71) and the lower exhaust cover (72) are both disc-shaped in shape, the driving device (6) is installed on the top surface of the wind scooper (3), an output shaft (61) of the driving device (6) vertically penetrates through the wind scooper (3) and extends into the wind guide pipe (5) through the first ventilation opening (23), the output shaft (61) extends along the central axis direction of the wind guide pipe (5), and the end part of the output shaft (61) is fixed with the top center of the lower exhaust cover (72),

a connecting hole (710) is formed in the center of the upper exhaust cover (71), a connecting sleeve (73) positioned at the top of the upper exhaust cover (71) is connected to the connecting hole (710), the upper exhaust cover (71) is connected to the output shaft (61) through the connecting hole (710) and the connecting sleeve (73), the inner circumferential surface of the upper end of the connecting sleeve (73) is recessed downwards along the circumferential direction to form a clutch ring step (731), the clutch assembly comprises a first clutch block (81) and a second clutch block (82) which are fixed on the output shaft (61) at intervals up and down, the first clutch block (81) and the second clutch block (82) are circular in shape, the upper exhaust cover (71) can move back and forth between the first clutch block (81) and the second clutch block (82) along the output shaft (61), wherein the first clutch block (81) is positioned at the upper end of the connecting sleeve (73), the first clutch block (81) can move up and down along the inner cavity at the upper end of the connecting sleeve (73) and is abutted against the clutch ring step (731), the second clutch block (82) is positioned below the upper exhaust cover (71) and is abutted against the bottom of the lower exhaust cover (72), the upper end of the output shaft is sleeved with a spring (74), the spring (74) is clamped between the bottom of the shell of the driving device (6) and the upper end of the connecting sleeve (73) and enables the upper exhaust cover (71) to have the tendency of moving downwards along the output shaft (61),

and, when the first clutch piece (81) is abutted against the clutch ring step (731), the upper exhaust cover (71) can move downward in synchronization with the lower exhaust cover (72), and when the second clutch piece (82) is abutted against the upper exhaust cover (71), the upper exhaust cover (71) can move upward in synchronization with the lower exhaust cover (72), and when the upper exhaust cover (71) and the lower exhaust cover (72) cover the first vent (23) and the second vent (12), respectively, the second clutch piece (82) is separated from the bottom of the upper exhaust cover (71), and when the second clutch piece (82) is abutted against the bottom of the upper exhaust cover (71), the lower exhaust cover (72) is separated from the second vent (12) and the upper exhaust cover (71) covers the first vent (23).

6. The steaming and baking all-in-one machine as claimed in claim 5, wherein the upper exhaust cover (71) comprises a disc-shaped upper cover body (711) and an upper sealing cover (712), the upper sealing cover (712) comprises a sealing ring (7121) wrapped on the peripheral wall of the upper cover body (711) and a sealing plate (7122) covered on the bottom surface of the upper cover body (711), a notch (71221) with a hole diameter larger than that of the first clutch block (81) is formed in the center of the sealing plate (7122), and the first clutch block (81) is accommodated in the notch (71221).

7. The steaming and baking all-in-one machine as claimed in claim 5, wherein the lower exhaust cover (72) comprises a disc-shaped lower cover body (721) and a lower sealing cover (722), and the lower sealing cover (722) covers the peripheral wall and the bottom surface of the lower cover body (721).

8. An all-in-one steaming and baking machine as claimed in any one of claims 1 to 7, wherein the apertures of the second air outlet (12) and the air guide opening (51) are smaller than the first air vent (23).

9. An all-in-one steaming and baking machine as claimed in any one of claims 1 to 7, wherein the second air inlet (22) is arranged opposite to the wheel axle of the impeller (41).

10. An all-in-one steaming and baking machine as claimed in claim 9, wherein the upper mounting plate (2) below the impeller (41) is downwardly concave to form an inverted conical air inlet cavity (24) coaxial with the impeller (41), and the second air inlet (22) is opened at the center of the air inlet cavity (24).

11. The steaming and baking all-in-one machine as claimed in claim 10, wherein the impeller (41) comprises an upper wheel body (411) and a lower wheel body (412) which are coaxially arranged up and down, the volute casing cover (4) is provided with an upper air inlet (42) which is up and down opposite to the upper wheel body (411), and the lower wheel body (412) is up and down opposite to the air inlet cavity (24).

12. An integrated steaming and baking machine according to any one of claims 1 to 7, wherein the driving device (6) is a thermal expansion type telescopic rod.

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