WO2023056902A1

WO2023056902A1 - Steam intake structure, and cooking utensil having same

Info

Publication number: WO2023056902A1
Application number: PCT/CN2022/123495
Authority: WO
Inventors: 张红帅; 司鹏; 沈志豪; 唐相伟
Original assignee: 广东美的厨房电器制造有限公司; 美的集团股份有限公司
Priority date: 2021-10-09
Filing date: 2022-09-30
Publication date: 2023-04-13

Abstract

A steam intake structure (1) and a cooking utensil having same. The steam intake structure (1) comprises a box (10) and a steam separation plate (20), wherein the box (10) is provided with a steam inlet; and the steam separation plate (20) divides the space in the box (10) into a steam intake cavity (13) and a cooking cavity (12), a plurality of steam separation holes (21) are provided in the steam separation plate (20), and the steam inlet cavity (13) is in communication with the steam inlet.

Description

Steam intake structure and cooking utensil with same

Cross References to Related Applications

This application claims priority to a Chinese patent application filed with the China Patent Office on October 09, 2021, with application number 202111177471.6, and titled "Steam Intake Structure and Cooking Appliance Therewith", the entire contents of which are incorporated herein by reference. Applying.

This application claims priority to a Chinese patent application filed with the China Patent Office on October 09, 2021, with application number 202122437189.9 and titled "Steam Intake Structure and Cooking Appliance Therewith", the entire contents of which are incorporated herein by reference. Applying.

This application claims the priority of a Chinese patent application with application number 202111177706.1 and application title "heating device" filed with the China Patent Office on October 09, 2021, the entire contents of which are incorporated herein by reference.

This application claims the priority of a Chinese patent application with application number 202111177701.9 and application name "Steam Box" filed with the China Patent Office on October 09, 2021, the entire contents of which are incorporated herein by reference.

technical field

The present application relates to the technical field of electric appliance manufacturing, in particular to a steam inlet structure and a cooking appliance having the same.

Background technique

In the cooking utensils in the related art, such as a steamer, the steam fills the cooking cavity at a slow speed during cooking, resulting in a slow heating of the cooking cavity, which affects the cooking efficiency and cooking effect.

application content

The steam inlet structure according to the embodiment of the present application includes: a box body and a steam distribution plate, the box body is provided with a steam inlet; the steam distribution plate divides the space in the box into a steam inlet cavity and a cooking cavity , the steam distribution plate is provided with a plurality of steam distribution holes, and the steam inlet chamber communicates with the steam inlet.

The steam inlet structure according to the embodiment of the present application has the advantages of high steam inlet efficiency and fast filling speed.

In addition, the steam inlet structure according to the above-mentioned embodiments of the present application may also have the following additional technical features:

In some embodiments, a baffle is further included, and the baffle divides the steam inlet chamber into a plurality of steam distribution chambers, and each of the steam distribution chambers communicates with at least one of the steam distribution holes.

In some embodiments, steam holes are provided on the separator, and there are multiple separators arranged at intervals along the steam inlet direction.

In some embodiments, the distance between every two adjacent partitions gradually increases along the steam inlet direction.

In some embodiments, the separator is perpendicular to the steam inlet direction.

In some embodiments, the separator is provided with a plurality of steam holes arranged at intervals.

In some embodiments, the distance between every two adjacent steam holes on the separator gradually decreases from the middle of the separator to both ends.

In some embodiments, the diameter of the steam vent gradually increases from the middle of the separator to both ends.

In some embodiments, each of the steam distribution chambers communicates with a plurality of the steam distribution holes.

In some embodiments, the distance between adjacent two of the plurality of steam distribution holes communicated with each of the steam distribution chambers decreases gradually from the middle to both ends of the steam distribution chamber.

In some embodiments, the diameters of the multiple steam distribution holes communicated with each of the steam distribution chambers gradually increase from the middle to both ends of the steam distribution chamber.

In some embodiments, the distance between two adjacent steam distribution holes decreases gradually along the steam inlet direction.

In some embodiments, the diameter of the steam distribution hole decreases gradually in the steam inlet direction.

In some embodiments, the steam inlet is arranged on at least one side plate of the steam inlet chamber.

In some embodiments, steam inlet grooves are provided on the steam distribution plate, and the steam inlet grooves communicate with the steam inlet cavity and the steam inlet respectively.

In some embodiments, the upper surface of the steam inlet slot is open to communicate with the steam inlet chamber.

In some embodiments, the steam inlet communicates with at least one end of the steam inlet slot.

In some embodiments, the steam inlet groove is arranged on one side edge of the steam distribution plate.

In some embodiments, the diameter of the steam distribution hole gradually increases from the direction close to the steam inlet groove to the direction away from the steam inlet groove.

In some embodiments, the distance between every two adjacent steam distribution holes decreases gradually in a direction from being close to the steam inlet groove to away from the steam inlet groove.

In some embodiments, in the length direction of the steam inlet groove, the diameter of the steam distribution hole gradually increases from a direction close to the steam inlet hole to a direction away from the steam inlet hole.

In some embodiments, in the length direction of the steam inlet slot, the distance between every two adjacent steam distribution holes gradually decreases from the direction close to the steam inlet hole to the direction away from the steam inlet hole.

In some embodiments, the steam inlet groove is formed on the front edge of the steam distribution plate.

In some embodiments, the steam inlet groove is formed by the concave of the steam distribution plate.

In some embodiments, the steam inlet hole is formed on the side wall of the box.

In some embodiments, the steam inlet hole communicates with one end of the steam inlet slot and faces the other end.

In some embodiments, the steam inlet groove is a square groove.

In some embodiments, an air intake pipe is also included, at least a part of the air intake pipe protrudes into the air intake cavity, and an exhaust hole is opened on the at least part of the air intake pipe.

In some embodiments, the steam distribution plate is arranged between the cooking cavity and the steam inlet cavity, the steam distribution cavity is defined between the steam distribution plate and the top wall of the box, and the The steam distribution plate is provided with steam distribution holes.

In some embodiments, the steam distribution plate is multi-layer, and the multi-layer steam distribution plate is spaced apart from top to bottom, and a steam inlet chamber is defined between the bottommost steam distribution plate and the top wall.

In some embodiments, the air intake pipe is located between the uppermost steam distribution plate and the top wall.

In some embodiments, the steam distribution holes on two adjacent layers of the steam distribution plates are arranged in a staggered manner.

In some embodiments, each layer of the steam distribution plate has a plurality of the steam distribution holes, and the plurality of the steam distribution holes are evenly distributed.

In some embodiments, the exhaust holes and the steam distribution holes are arranged in a staggered manner.

In some embodiments, at least a part of the top wall protrudes outward to form a protrusion, and the air intake pipe penetrates inward from a peripheral wall of the protrusion.

In some embodiments, there are multiple air intake pipes, and the multiple air intake pipes penetrate inward from different directions of the peripheral wall.

In some embodiments, the distances between the multiple inlet pipes and the steam distribution plate are respectively equal.

In some embodiments, a steam generating component is also included, and the steam generating component is connected with the tank and communicated with the steam inlet chamber.

In some embodiments, the steam inlet chamber is vertically opposite to the cooking chamber, and the steam inlet chamber is arranged on the top or above the cooking chamber.

In some embodiments, the ratio of the horizontal projected area of the steam distribution plate to the horizontal cross-sectional area of the cooking cavity is not less than 0.5, and a plurality of the steam distribution holes are evenly spaced and adjacent to each other on the steam distribution plate. the periphery of the steam distribution plate.

In some embodiments, the steam distribution hole is configured to discharge from the steam inlet cavity to the cooking cavity from top to bottom, and the outlet direction of the steam generating component is perpendicular to the steam distribution hole or has a predetermined The included angle of the angle.

In some embodiments, the steam distribution plate is arranged horizontally on the top of the box, and the steam inlet cavity is formed between the steam distribution plate and the inner surface of the top wall of the box.

In some embodiments, the box includes a casing and a cover, the cooking cavity is configured inside the casing, the cover is covered on the outside of the casing, and the cover is connected to the outside of the casing. The steam inlet cavity is constructed between the surfaces, the part of the housing corresponding to the cover is configured as the steam distribution plate, and the plurality of steam distribution holes are arranged on the housing and the cover. on the corresponding part of the body.

In some embodiments, a part of the housing corresponding to the cover protrudes outward of the housing and is embedded in the cover.

In some embodiments, the housing includes a top wall, the plurality of steam distribution holes are arranged on the top wall, and the cover is placed on the outside of the top wall to configure the inlet and outlet in the cover. The steam cavity, and the cover covers the multiple steam distribution holes.

In some embodiments, the steam generating component includes: a water box, a water pump, and a steam generator, and the water pump communicates with the water box; the steam generator is respectively connected with the water pump and the tank.

The cooking appliance according to the embodiment of the present application includes the aforementioned steam inlet structure.

The cooking appliance according to the embodiment of the present application has advantages such as high cooking efficiency by applying the aforementioned steam inlet structure.

Description of drawings

Fig. 1 is a structural schematic diagram of a steam inlet structure according to some embodiments of the present application.

Fig. 2 is a partial structural schematic diagram of a steam inlet structure according to some embodiments of the present application.

Fig. 3 is a partial structural schematic diagram of a steam inlet structure according to some embodiments of the present application.

Fig. 4 is a schematic structural diagram of a steam inlet structure according to other embodiments of the present application.

Fig. 5 is a partial structural schematic diagram of a steam inlet structure according to other embodiments of the present application.

Fig. 6 is a schematic structural diagram of a steam inlet structure according to other embodiments of the present application.

Fig. 7 is a partial structural schematic diagram of a steam inlet structure according to other embodiments of the present application.

Fig. 8 is a structural schematic diagram of a steam inlet structure according to some further embodiments of the present application.

Fig. 9 is a schematic structural diagram of a steam inlet structure according to some further embodiments of the present application.

Fig. 10 is a cross-sectional view of a steam inlet structure according to some other embodiments of the present application.

Fig. 11 is a partial structural schematic diagram of a steam inlet structure according to some further embodiments of the present application.

Fig. 12 is a structural schematic diagram of a steam inlet structure according to some other embodiments of the present application.

Fig. 13 is an exploded view of a steam inlet structure according to some other embodiments of the present application.

Fig. 14 is an exploded view of a steam inlet structure according to some other embodiments of the present application.

Fig. 15 is a structural schematic diagram of a steam inlet structure according to some other embodiments of the present application.

Fig. 16 is a working effect diagram of the steam inlet structure according to some other embodiments of the present application (showing the effect when the steam gradually sinks).

Fig. 17 is a schematic structural diagram of a steam inlet system in the related art.

Reference signs:

Steam inlet structure 1, box body 10, steam inlet 11, steam inlet cavity 12, steam distribution cavity 120, cooking cavity 13, top wall 11c, protrusion 111, housing 11a, cover body 11b, convex hull structure 14, inlet Trachea 2, exhaust hole 201, steam distribution plate 20, steam distribution hole 21, steam inlet tank 22, partition plate 30, steam passage hole 31, water pump 3, steam generator 4, pipeline 5, water box 6, air a, Steam b, steam layer c; cavity 10', water pump 3', steam generator 4', pipeline 5', water box 6'.

Detailed ways

This application is based on the applicant's discovery and understanding of the following facts and issues:

Specifically, in the steam box in the related art, the steam is sprayed into the cooking chamber at a certain speed through the spout. Since the steam is injected at a relatively fast speed, the steam is mainly concentrated on the path in the extending direction of the spout, and it takes a long time to cook. Gradually fill other positions of the cooking cavity, resulting in slower filling speed and slower heating of the cooking cavity, which affects the cooking efficiency and cooking effect.

Embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote 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 only for explaining the present application, and should not be construed as limiting the present application.

The steam intake structure 1 according to some embodiments of the present application will be described below with reference to the accompanying drawings.

As shown in FIGS. 1-3 , the steam intake structure 1 according to the embodiment of the present application includes a box body 10 and a steam distribution plate 20 . The box body 10 is provided with a steam inlet 11 . The steam distribution plate 20 divides the space in the box body 10 into a steam inlet cavity 12 and a cooking cavity 13 . The steam distribution plate 20 is provided with a plurality of steam distribution holes 21 , and the steam inlet cavity 12 communicates with the steam inlet 11 . Specifically, after the steam enters through the steam inlet 11 , is dispersed to a plurality of steam distributing chambers 120 , and then enters the cooking chamber 13 through a plurality of steam distributing holes 21 .

According to the steam inlet structure 1 of the embodiment of the present application, with reference to FIG. 1 , by setting the steam distribution plate 20, the space in the box body 10 can be divided into the air intake cavity 12 and the cooking cavity 13 by using the steam distribution plate 20, so that the steam passes through the intake cavity. After the steam port 11 enters, it can be dispersed in the steam inlet cavity 12 first, and then enter the cooking cavity 13 through a plurality of steam distribution holes 21, so that the steam can be evenly dispersed into the cooking cavity 13, avoiding excessive concentration of the steam, and making the steam form a whole The steam layer, along with the filling of the steam, squeezes out the air without mixing with the air, so that the steam can quickly fill the cooking chamber 13 and improve the filling efficiency of the steam, thereby improving the steam inlet efficiency of the steam inlet structure 1 and increasing the temperature of the cooking chamber 13 speed.

The following describes the steam intake structure 1 according to a specific embodiment of the present application with reference to the accompanying drawings. Optionally, the partition plate 30 divides the steam inlet chamber into a plurality of steam distribution chambers 120, and each steam distribution chamber 120 communicates with at least one steam distribution hole 21. By setting the partition plate 30 in the steam inlet chamber 12, it is possible to The steam inlet chamber 12 is further divided into multiple steam distribution chambers 120, so that after the steam enters through the steam inlet 11, it can be dispersed into multiple steam distribution chambers 120, and then communicated with the multiple steam distribution chambers 120 respectively. The steam distribution hole 21 enters the cooking chamber 13. Further avoid steam concentration, further facilitate steam to quickly fill the cooking chamber 13, and further improve steam filling efficiency, thereby improving the steam inlet efficiency of the steam inlet structure 1, and increasing the heating speed of the cooking chamber 13. That is to say, the steam inlet structure 1 can promote the steam to fill the cooking cavity 13 evenly and dispersedly by setting the steam distribution plate 20 and the partition plate 30. Compared with the technical scheme in the related art, the steam filling efficiency of the cooking cavity 13 can be improved, and the cooking cavity 13 can be improved. The steam intake efficiency of the steam intake structure 1 improves the heating rate of the cooking cavity 13 .

Therefore, the steam intake structure 1 according to the embodiment of the present application has the advantages of high steam intake efficiency and fast filling speed.

Optionally, as shown in FIGS. 1-3 , the steam intake structure 1 according to the embodiment of the present application includes a box body 10 , a steam distribution plate 20 and a separator 30 . Specifically, as shown in FIGS. 1-3 , the separator 30 is provided with steam holes 31 , and there are a plurality of separators 30 arranged at intervals along the steam inlet direction. It should be understood here that the "steam inlet direction" refers to the direction in which the steam enters after being guided by the steam inlet 11, for example, as shown by the arrow a in the figure. In this way, after steam enters through the steam inlet 11, it enters multiple steam distribution chambers 120 successively through the steam holes 31, thereby further reducing the steam flow rate, facilitating the dispersion of steam into the cooking chamber 13, and improving the efficiency of steam filling the cooking chamber 13 .

Advantageously, the distance between every two adjacent partitions 30 gradually increases along the steam inlet direction. Since the flow rate of the steam gradually decreases after passing through multiple partitions 30 successively, the obstruction and dispersion effect of the partitions 30 on the steam can be gradually reduced by rationally arranging the spacing of the partitions 30, so that the steam can be dispersed more evenly and further facilitate the steam dispersion The cooking cavity 13 is filled.

More specifically, as shown in FIGS. 1-3 , the separator 30 is perpendicular to the steam inlet direction. In this way, the decelerating and dispersing effect of the separator 30 on the steam can be improved.

More advantageously, as shown in FIGS. 1-3 , the separator 30 is provided with a plurality of steam holes 31 arranged at intervals. In this way, the steam can pass through the separator 30 through the plurality of steam holes 31 , which further facilitates the uniform distribution of the steam.

Furthermore, the distance between every two adjacent steam vents 31 on the partition 30 gradually decreases from the middle of the partition 30 to both ends. Since steam enters through the steam inlet 11, the growth rate of the flow distance will gradually decrease. By reasonably arranging the spacing of the steam holes 31, the steam can be dispersed more evenly, and the steam filling efficiency of the cooking cavity 13 can be further improved.

The apertures of the steam holes 31 gradually increase from the middle of the separator 30 to both ends. Since steam enters through the steam inlet 11, the growth rate of the flow distance will gradually decrease. By reasonably setting the aperture of the steam hole 31, the steam can be dispersed more evenly, and the steam filling efficiency of the cooking cavity 13 can be further improved.

1-3 show a steam intake structure 1 according to a specific example of the present application, and each steam distribution cavity 120 communicates with a plurality of steam distribution holes 21 . In this way, the steam in each steam distribution cavity 120 can be dispersed to the cooking cavity 13 through a plurality of steam distribution holes 21 , thereby further facilitating the distribution of steam and improving the steam filling efficiency of the cooking cavity 13 .

Advantageously, the distance between every two adjacent steam distribution holes 21 communicated with each steam distribution chamber 120 gradually decreases from the middle to both ends of the steam distribution chamber 120 where it is located. Since steam enters through the steam inlet 11, the growth rate of the flow distance will gradually decrease. By reasonably arranging the spacing of the steam distribution holes 21, the steam can be more evenly dispersed into the cooking cavity 13, and the steam filling of the cooking cavity 13 can be further improved. efficiency.

More advantageously, the diameters of the multiple steam distribution holes 21 connected to each steam distribution chamber 120 gradually increase from the middle to both ends of the steam distribution chamber 120 where it is located. Since steam enters through the steam inlet 11, the growth rate of the flow distance will gradually decrease. By reasonably setting the aperture of the steam distribution hole 21, the steam can be more evenly dispersed into the cooking cavity 13, and the steam filling efficiency of the cooking cavity 13 can be further improved. .

Further, the distance between every two adjacent steam distribution holes 21 gradually decreases along the steam inlet direction. Since steam enters through the steam inlet 11, the growth rate of the flow distance will gradually decrease. By reasonably arranging the spacing of the steam distribution holes 21, the steam can be more evenly dispersed into the cooking cavity 13, and the steam filling of the cooking cavity 13 can be further improved. efficiency.

The aperture of the steam distribution hole 21 gradually decreases in the steam inlet direction. Since steam enters through the steam inlet 11, the growth rate of the flow distance will gradually decrease. By reasonably setting the aperture of the steam distribution hole 21, the steam can be more evenly dispersed into the cooking cavity 13, and the steam filling efficiency of the cooking cavity 13 can be further improved. . Specifically, as shown in FIGS. 1-3 , the steam inlet 11 is provided on at least one side plate of the steam inlet cavity 12 . In this way, steam can enter from the side of the steam inlet chamber 12, which facilitates the setting of the steam source. The steam inlet cavity 12 is located above the cooking cavity 13 . In this way, after the steam is discharged from the steam distribution hole 21 , it can gradually fill the cooking cavity 13 downwards by settling, so as to facilitate the improvement of the steam filling efficiency of the cooking cavity 13 . Specifically, the steam inlet may communicate with a steam source. The source of steam can be provided by a heating device.

A heating device according to an embodiment of the present application is described below. The heating device according to the embodiment of the present application includes a water tank, electrodes, a conductivity detection device and a controller.

The electrodes are used to heat the water in the tank. The conductivity detecting device detects the conductivity of the water in the water tank. The controller is respectively electrically connected with the electrodes and the conductivity detection device to adjust the voltage of the electrodes according to the conductivity.

According to the heating device of the embodiment of the present application, by setting electrodes, the electrodes are used to heat the water in the water tank. Compared with the heating device in the related art, the water itself is heated as a resistive medium, which can reduce the accumulation of scale and avoid affecting the heating device. High heating efficiency, avoiding blockage or even burning of the heating device. Moreover, due to the different water quality, the conductivity of the water body is also different when the water body is used as a resistive medium, resulting in different heating power of the water body under the same voltage, and it is difficult to control the heating power of the water body. By setting the conductivity detection device and the controller, and using the controller to adjust the voltage of the electrodes according to the conductivity, it is easier to control the heating power than in the related art, and avoid the heating effect being affected by the heating power being too large or too small.

Therefore, the heating device according to the embodiment of the present application has advantages such as not easy to accumulate scale, high heating efficiency, and good heating effect.

Specifically, there are two electrodes arranged at intervals. In this way, the water body between the two electrodes can be used to form a resistive medium, and the water body between the two electrode pairs can be energized to directly heat the water body between the two electrodes to avoid scale accumulation.

Optionally, the two electrodes are arranged at intervals along the horizontal direction. This can facilitate the arrangement of the electrodes, so that the two electrodes can enter or exit water at the same time when the water level changes.

Specifically, when the water level in the water tank drops below the electrodes, the two electrodes are no longer connected by the water body, and the electrical connection between the two electrodes is naturally disconnected to avoid dry heating. In this way, not only can dry burning be avoided, the reliability of the heating device can be ensured, but also the protection device can be omitted to reduce the cost.

More specifically, the electrodes are installed in the water tank through the mounts. This facilitates the installation of the electrodes in the tank and facilitates the orientation and positioning of the electrodes.

In a specific embodiment, the mounting seat is located on the bottom wall of the water tank, and the electrodes are oriented vertically. In this way, the electrical connection between the electrodes can be disconnected when the water level drops close to the bottom wall, so as to facilitate the control of the volume of the water tank.

In another specific embodiment, the mounting seat is located on the side wall of the water tank adjacent to the bottom wall, and the electrodes are oriented in a horizontal direction. In this way, the electrical connection between the electrodes can be disconnected when the water level drops close to the bottom wall, so as to facilitate the control of the volume of the water tank.

Specifically, the heating device further includes a frequency converter, and the controller is electrically connected to the electrodes through the frequency converter. Therefore, the frequency converter can be used to adjust the voltage of the electrode, so as to facilitate the control of the electrode voltage.

Optionally, the conductivity detection device includes a TDS detection device. Therefore, the conductivity of the water body can be fed back according to the TDS detection device, so as to calculate the voltage of the electrode according to the required power.

More specifically, the controller adjusts the voltage of the electrodes according to the detection value of the TDS detection device so that the voltage of the electrodes is proportional to the detection value. What needs to be understood here is that "the voltage of the electrode is proportional to the detection value" is without considering the target power. In other words, under the condition that the target power is constant, the voltage of the electrode needs to be proportional to the detection value. In this way, the heating power of the heating device can be easily controlled, and the heating effect can be avoided from being too high or too low.

The water tank is provided with a steam outlet. In this way, the steam generated after the water in the water tank is heated by the electrodes can be discharged through the steam outlet, and the steam discharged from the steam outlet is further introduced into the cooking cavity of the cooking appliance, so that steam cooking of food can be realized.

Advantageously, the steam outlet is located in the upper part of the water tank. This can facilitate the control of the maximum water storage capacity of the water tank, facilitate the control of the volume of the water tank, and facilitate the discharge of steam.

In one embodiment, the steam outlet may be formed on the top wall of the water tank.

In another embodiment, the steam outlet may be formed on the side wall of the tank adjacent to the top wall.

Optionally, the electrodes are graphite electrodes. This not only reduces the accumulation of scale on the electrodes, but also reduces costs.

Specifically, the electrodes are plate-shaped or column-shaped. This facilitates heating of the water body.

The following describes the working process of the heating device according to the embodiment of the present application.

When the water storage in the water tank is insufficient, there is an open circuit between the two electrodes, the heating device is automatically turned off, and no steam is generated. When water is added into the water tank until the electrode is turned on, the heating device is turned on. The graphite electrode uses the resistance of the water body in the water tank itself, and the water body itself acts as a resistance medium to heat the water body to generate steam.

At the same time, the TDS detection device detects the detection value of TDS of water, and feeds it back to the controller. The controller calculates the conductivity according to the TDS value, reflects the resistivity of the water body, and calculates the voltage value according to the target power value, and feeds it back to the frequency converter to adjust the output. Voltage. Under different water hardness conditions, the heating body can also be adjusted with variable power.

Specifically, the cooking cavity can also be connected with a steam inlet device and an air extraction device. The steam inlet device can communicate with the heating device or consist of the heating device.

The air extraction device and the steam inlet device operate simultaneously for at least a period of time.

According to the steam circuit system of the embodiment of the present application, the air in the cooking cavity can be extracted by setting an air extraction device, so as to prevent the remaining air from affecting the steam intake speed and improve the steam intake efficiency of the steam circuit system.

Specifically, when used in a steam cooking appliance, the rate at which the steam fills the cooking cavity can be increased, and the cooking efficiency and cooking effect can be improved.

Moreover, by making the air extraction device and the steam intake device operate simultaneously for at least a period of time, in other words, the steam circuit system simultaneously extracts air and enters steam for at least a period of time, compared with the technical solution of first extracting air and then entering air in the related art, It can reduce the time for users to wait for air extraction, shorten the total time required for steam intake, and improve the efficiency of steam intake.

Specifically, when used in a steam cooking appliance, the total time required for steam filling can be shortened, the user's waiting time can be reduced, and the cooking efficiency can be improved. Therefore, the steam circuit system according to the embodiment of the present application has the advantages of fast steam intake speed and high steam intake efficiency.

Specifically, the cooking cavity has an air extraction hole and a steam intake hole, the air extraction device communicates with the cooking cavity through the air extraction hole, and the steam intake device communicates with the cooking cavity through the steam intake hole. This can facilitate the communication of the steam inlet device and the air extraction device with the cooking cavity of the casing.

Advantageously, the steam inlet hole is arranged at the upper part of the box body, and the air extraction hole is arranged at the lower part of the box body. In this way, the steam inlet hole can be kept away from the air extraction hole, so as to prevent the air extraction device from extracting the steam that has just entered the cooking cavity, thereby avoiding affecting the steam intake efficiency.

More advantageously, one of the steam inlet hole and the air extraction hole is arranged on the side wall of the cooking chamber and the other is arranged on the rear wall of the cooking chamber. In this way, the steam inlet hole can be kept away from the air extraction hole, so as to prevent the air extraction device from extracting the steam that has just entered the cooking cavity, thereby avoiding affecting the steam intake efficiency.

Specifically, the air extraction device extracts air from the cooking cavity during at least a part of the time during which the food is cooked in the cooking cavity. In this way, the steam intake efficiency of the steam circuit system can be improved during the cooking stage, thereby improving the cooking efficiency.

In a specific embodiment of the present application, the steam circuit system further includes a temperature detection device for detecting the temperature in the cooking cavity, and the temperature detection device communicates with the air extraction device. In this way, the start-stop timing of the air extraction device can be controlled according to the temperature in the cooking cavity.

Specifically, the air extraction device stops running when the detection value of the temperature detection device is greater than or equal to a predetermined value. In this way, the air extraction can be stopped when the temperature in the cooking cavity reaches the desired temperature, so as to avoid affecting the subsequent cooking effect.

In another specific embodiment of the present application, the steam circuit system further includes a timing device, and the timing device stops the air extraction device after the air extraction device runs for a predetermined time. Thus, the stop timing of the air extraction device can be controlled by timing, so as to avoid affecting the subsequent cooking effect.

Specifically, the steam circuit system further includes a controller, and the controller communicates with the steam inlet device and the air extraction device respectively. This can facilitate the control of the operating timing of the steam inlet device and the air extraction device.

More specifically, the controller controls the steam inlet device and the air extraction device to operate simultaneously when cooking starts. In other words, after the cooking appliance receives the cooking instruction, the steam inlet device and the air extraction device operate at the same time, and the cooking cavity enters and extracts air at the same time, thereby improving the steam intake efficiency of the steam circuit system. Optionally, the air extraction device is a one-way air pump. This facilitates the extraction of air from the cooking chamber.

The following describes the working process of the steam circuit system according to the specific embodiments of the present application.

After the cooking utensil receives the cooking instruction, the steam inlet device and the exhaust device operate simultaneously, the cooking cavity enters steam and extracts air at the same time, the steam gradually fills the cooking cavity, the temperature in the cooking cavity increases gradually with the filling of steam, and the temperature detection device real-time The temperature in the cooking cavity is detected, and when the temperature reaches a predetermined value, it indicates that the steam in the cooking cavity is filled to a required level, and the air extraction device stops running to avoid affecting the subsequent cooking process.

The following describes a cooking appliance control method according to an embodiment of the present application, which includes the following steps: when starting cooking, feed steam into the cooking cavity of the cooking appliance, and pump air into the cooking cavity; the temperature of the cooking cavity is greater than or equal to Stop pumping at predetermined temperature.

The cooking appliance according to the embodiment of the present application has the advantages of fast steam intake speed and high steam intake efficiency.

The following describes the control method of the cooking appliance according to the embodiment of the present application, including the following steps: when starting to cook, inject steam into the cooking cavity of the cooking appliance, and exhaust the cooking cavity; stop the extraction after a predetermined time elapses.

As shown in FIGS. 4-7 , according to the steam inlet structure 1 of some other embodiments of the present application, the tank 10 is provided with a steam inlet 11 . The steam distribution plate 20 is provided with a plurality of steam distribution holes 21 arranged at intervals. The steam distribution plate 20 divides the cabinet 10 into a steam inlet cavity 12 and a cooking cavity 13. The steam distribution plate 20 is provided with a steam inlet groove 22, and the steam inlet The groove 22 communicates with the steam inlet cavity 12 and the steam inlet 11 respectively.

Specifically, after the steam enters through the steam inlet 11, it flows under the guidance of the steam inlet groove 22. At the same time, the steam gradually enters the steam inlet cavity 12 above the steam distribution plate 20 during the flow in the steam inlet groove 22, and finally passes through the The steam distribution hole 21 on the steam distribution plate 20 enters the cooking cavity 13 .

According to the steam inlet structure 1 of the embodiment of the present application, by setting the steam distribution plate 20, the space in the box body 10 can be divided into a steam inlet cavity 12 and a cooking cavity 13 by using the steam distribution plate 20, so that steam enters through the steam inlet 11 Finally, it can be dispersed in the steam inlet cavity 12 first, and then enter the cooking cavity 13 through a plurality of steam distribution holes 21, so that the steam can be evenly dispersed into the cooking cavity 13, avoiding excessive concentration of the steam, and making the steam form an integral steam layer. The air is squeezed out with the filling of the steam without being mixed with the air, which facilitates the steam to quickly fill the cooking chamber 13 and improves the filling efficiency of the steam, thereby improving the steam intake efficiency of the steam inlet structure 1 and increasing the heating speed of the cooking chamber 13. And, by setting the steam inlet groove 22 on the steam distribution plate 20, the steam inlet groove 22 is connected with the steam inlet cavity 12 and the steam inlet port respectively, and the steam inlet groove 22 can be used to guide the steam, which helps the steam Diffusion is performed in the extending direction of the groove 22 . Thus, the steam can enter the steam inlet chamber 12 more evenly and dispersedly, thereby further facilitating the steam to quickly fill the cooking chamber 13, improving the steam filling efficiency, improving the steam inlet efficiency of the steam inlet structure 1, and increasing the heating rate of the cooking chamber 13. Therefore, the steam intake structure 1 according to the embodiment of the present application has the advantages of high steam intake efficiency and fast filling speed.

The following describes the steam intake structure 1 according to a specific embodiment of the present application with reference to the accompanying drawings.

In some specific embodiments of the present application, as shown in FIGS. 4-7 , the steam intake structure 1 according to the embodiment of the present application includes a box body 10 and a steam distribution plate 20 . Specifically, the upper surface of the steam inlet groove 22 is open to communicate with the steam inlet chamber 12 (the up and down directions are shown by the arrows in the figure and are only for convenience of description, not for the limitation of the actual arrangement direction). This can facilitate the communication between the steam inlet groove 22 and the steam inlet chamber 12 , so that the steam can enter the steam inlet chamber 12 from the steam inlet groove 22 more smoothly and evenly.

More specifically, as shown in FIGS. 4-7 , the steam inlet 11 communicates with at least one end of the steam inlet groove 22 . In this way, the communication between the steam inlet groove 22 and the steam inlet port 11 can be facilitated, and the steam can enter the steam inlet groove 22 more smoothly.

Advantageously, the steam inlet groove 22 is arranged on one side edge of the steam distribution plate 20 . This can facilitate the setting of the steam inlet groove 22 .

More advantageously, the diameter of the steam distribution hole 21 gradually increases from the direction close to the steam inlet groove 22 to the direction away from the steam inlet groove 22 . Since the steam enters the steam inlet chamber 12 through the steam inlet groove 22, the growth rate of the flow distance will gradually decrease, by reasonably setting the aperture of the steam distribution hole 21, the steam can be more evenly dispersed into the cooking chamber 13, and the cooking chamber 13 can be further improved. steam filling efficiency.

Furthermore, the distance between every two adjacent steam distribution holes 21 decreases gradually in the direction from approaching the steam inlet groove 22 to away from the steam inlet groove 22 . Since the steam enters the steam inlet cavity 12 through the steam inlet groove 22, the growth rate of the flow distance will gradually decrease. By reasonably arranging the spacing of the steam distribution holes 21, the steam can be more evenly dispersed into the cooking cavity 13, further improving the cooking cavity. 13 steam fill efficiency.

Optionally, in the length direction of the steam inlet slot 22 , the diameter of the steam distribution hole 21 gradually increases from the direction close to the steam inlet 11 to away from the steam inlet 11 . Since the steam enters the steam inlet groove 22 through the steam inlet 11, the growth rate of the flow distance will gradually decrease. By reasonably setting the aperture of the steam distribution hole 21, the steam can be more evenly dispersed into the cooking cavity 13, and the cooking cavity 13 can be further improved. steam filling efficiency.

Further, in the length direction of the steam inlet groove 22 , the distance between every two adjacent steam distribution holes 21 gradually decreases from the direction close to the steam inlet 11 to the direction away from the steam inlet 11 . Since the steam enters the steam inlet groove 22 through the steam inlet 11, the growth rate of the flow distance will gradually decrease. By reasonably setting the aperture of the steam distribution hole 21, the steam can be more evenly dispersed into the cooking cavity 13, and the cooking cavity 13 can be further improved. steam filling efficiency.

Figures 4-7 show a steam intake structure 1 according to a specific example of the present application. The steam inlet groove 22 is formed on the front edge of the steam distribution plate 20 (the front and rear directions are shown by the arrows in the figure and are only for the convenience of expression, and are not limited to the actual installation direction). Thus, the setting of the steam inlet groove 22 can be facilitated. Specifically, as shown in FIG. 2 , the steam inlet groove 22 is formed by the concave steam distribution plate 20 . This can facilitate the formation of the steam inlet groove 22, reduce the number of parts, and simplify the assembly process.

Optionally, as shown in FIGS. 4-7 , the steam inlet 11 is formed on the side wall of the box body 10 . This can facilitate the setting of the steam inlet 11 and facilitate the connection of the steam inlet 11 with the steam source.

Advantageously, the steam inlet 11 communicates with one end of the steam inlet slot 22 and faces the other end. This can make the steam flow more smoothly in the steam inlet groove 22 .

More specifically, as shown in FIG. 5 , the steam inlet groove 22 is a square groove. This can facilitate the adaptation of the steam inlet groove 22 to the structure of the box body 10 and facilitate the setting of the steam inlet groove 22 . The steam inlet cavity 12 is located above the cooking cavity 13 . In this way, after the steam is discharged from the steam distribution hole 21 , it can gradually fill the cooking cavity 13 downwards by settling, so as to facilitate the improvement of the steam filling efficiency of the cooking cavity 13 .

As shown in Figures 8-11, according to the steam inlet structure 1 of some other embodiments of the present application, the box body 10 has a cooking chamber 13 and a steam inlet chamber 12 above the cooking chamber 13, and the cooking chamber 13 is connected to the steam inlet chamber 12 through, so that the gas in the air inlet chamber 12 can flow into the cooking chamber 13, at least a part of the air inlet pipe 2 stretches into the air inlet chamber 12, and at least a part of the air inlet pipe 2 is provided with an exhaust hole 201 to The steam discharged from the steam generator into the intake pipe 2 can be discharged into the steam intake cavity 12 through the exhaust hole 201 . That is to say, the steam enters the steam intake structure 1 through the intake pipe 2, and is discharged into the steam intake cavity 12 through the exhaust hole 201 provided on the intake pipe 2. Diffusion and deceleration have been obtained in the chamber 12, so that the flow velocity of the steam entering the cooking chamber 13 from the steam inlet chamber 12 can be reduced, and the steam will form a stable steam layer in the steam inlet chamber 12, and the steam The layer can move slowly from top to bottom to stably discharge the air in the cooking cavity 13 from the bottom of the cooking cavity 13, thus reducing the degree of mixing of steam and air to increase the discharge speed of the air, thereby improving cooking The heating efficiency of chamber 13.

Because the density of steam is lower than the density of air, therefore, the air inlet pipe 2 and the air inlet chamber 12 are arranged on the upper side of the cooking chamber 13, so that the steam can fill the whole air inlet structure 1 from top to bottom, and simultaneously The original air in the cooking chamber 13 is exhausted from the steam inlet structure 1 to further reduce the degree of mixing of steam and air, and increase the speed at which the steam fills the cooking chamber 13, so as to increase the temperature rise rate of the environment in the cooking chamber 13 and reduce the cooking time of the steam inlet structure 1. purpose of time.

According to the steam inlet structure 1 of the embodiment of the present application, the steam inlet structure 1 can reduce the flow rate of steam flowing into the cooking cavity 13, and can reduce the mixing degree of steam and air in the initial stage of cooking, so as to increase the speed at which the steam fills the cooking cavity 13 , so that the ambient temperature in the cooking cavity 13 can be rapidly increased to reduce the cooking time of the steam intake structure 1 for cooking food, thereby achieving the purpose of fast cooking.

As shown in FIGS. 8 and 10 , the steam inlet structure 1 further includes: a steam distribution plate 20 , and the steam distribution plate 20 is arranged between the cooking chamber 13 and the steam inlet chamber 12 to separate the cooking chamber 13 from the steam inlet chamber 12 . Wherein, the steam inlet cavity 12 is defined between the steam distribution plate 20 and the top wall 11c of the box body 10, so that the steam inlet cavity 12 is located at the uppermost end of the entire box body 10, and the steam distribution plate 20 is provided with a steam distribution hole 21 , to communicate with the steam inlet chamber 12 and the cooking chamber 13, so that the steam in the steam inlet chamber 12 can enter the cooking chamber 13 through the steam distribution hole 21, that is, the steam layer formed in the steam inlet chamber 12 needs to be further Only through the steam distribution hole 21 provided on the steam distribution plate 20 can it move downwards, therefore, the flow velocity of the steam entering the cooking cavity 13 is further reduced, so as to further reduce the mixing degree of the steam and air, thereby further improving the steam filling The speed of the cooking chamber 13.

Wherein, the steam distribution plate 20 can be integrally cast, that is, the steam distribution holes 21 can be directly formed on the steam distribution plate 20 , or the steam distribution holes 21 can be processed on the steam distribution plate 20 by a stamping process.

Further, referring to FIG. 10 , the steam distribution plate 20 can be multi-layered, and the multi-layer steam distribution plate 20 is spaced up and down, wherein the steam inlet chamber 12 is defined between the bottom steam distribution plate 20 and the top wall 11c. Thus, the steam layer needs to be decelerated by the multi-layer steam distribution plate 20 in the process of moving downward, so as to further greatly reduce the flow velocity of the steam flowing into the cooking cavity 13, thereby further greatly improving the steam filling of the cooking cavity. 13, so as to realize the purpose of rapid cooking of the steam inlet structure 1.

Furthermore, the intake pipe 2 is located between the uppermost steam distribution plate 20 and the top wall, so that the steam layer can pass through a plurality of steam distribution plates 20 in turn during the downward movement, so as to utilize the steam distribution plates to the greatest extent. 20 Reduce the steam flow rate.

According to some embodiments of the present application, the steam distribution holes 21 on two adjacent layers of steam distribution plates 20 are arranged staggered, in other words, the steam distribution holes 21 on two adjacent layers of steam distribution plates 20 are not arranged directly. Thus, the steam flow flowing from the steam distribution hole 21 of the upper steam distribution plate 20 to the lower steam distribution plate 20 will be blocked by the plate body of the lower steam distribution plate 20, and then pass through the distribution of the lower steam distribution plate 20 after further deceleration. The steam holes 21 flow into the next layer to realize the gradual deceleration of the steam flow between the multi-layer steam distribution plates 20, so that the barrier effect of the multi-layer steam distribution plates 20 can be used to achieve a better effect of decelerating the steam flow velocity.

With reference to the embodiment shown in Figure 8 and Figure 10, each layer of steam distribution plate 20 has a plurality of steam distribution holes 21, and the plurality of steam distribution holes 21 are evenly distributed, so that during the downward movement of the steam layer, the steam in the same plane , the steam density and steam flow rate are uniform everywhere, so as to ensure that the steam layer can move downwards stably, so that the air can be discharged from the cooking cavity 13 stably, thereby increasing the speed at which the steam fills the cooking cavity 13, and can also make the cooking cavity 13 The steam density is more uniform everywhere in the cooking chamber 13 to ensure that the cooking chamber 13 can be evenly heated, so that the steam inlet structure 1 can have a better heating effect on food.

Further, the exhaust hole 201 and the steam distribution hole 21 are staggered to avoid the steam entering the steam inlet chamber 12 from the exhaust hole 201 directly impacting the steam distribution hole 21 and directly flowing from the steam distribution hole 21 into the next layer of steam distribution plate 20 The steam caused by the interlayer cannot form a stable steam layer in the steam inlet chamber 12, thereby avoiding that the steam flow rate cannot be reduced by the steam distribution plate 20. Therefore, the exhaust hole 201 and the steam distribution hole 21 are staggered to ensure A steam layer can be stably formed in the steam cavity 12 so as to further reduce the flow velocity of the steam flowing into the cooking cavity 13 .

9 and 10, at least a part of the top wall 11c protrudes outward to form a protrusion 111, and the air intake pipe 2 penetrates inward from the surrounding wall of the protrusion 111, so that the steam interlayer chamber and the air intake pipe 2 The configuration does not occupy the cooking space of the steam intake structure 1 for cooking, so that the cooking cavity 13 can be set larger, so as to further increase the volume of the steam intake structure 1 .

With reference to the embodiment shown in Figure 8 and Figure 11, there are multiple intake pipes 2, so that the steam flowing out of the steam generator can be divided by multiple intake pipes 2, so as to reduce the flow rate of steam flowing into the steam intake chamber 12, and , a plurality of intake pipes 2 are arranged at intervals, and the exhaust holes 201 on the plurality of intake pipes 2 are arranged staggered from each other, so as to prevent the steam discharged from the exhaust holes 201 on two adjacent intake pipes 2 from colliding with each other to generate flow The turbulent flow at a faster speed further enables a stable steam layer to be formed in the steam inlet cavity 12 .

Further, a plurality of air intake pipes 2 are pierced into the box body 10 from different directions of the surrounding wall, so that the steam discharged from the air intake pipes 2 can fill the air intake chamber 12 more evenly, thereby making the steam density in the air intake chamber 12 more dense. Uniform, so as to form a stable steam layer, and then can make the steam density in the cooking cavity 13 more uniform, to ensure the uniform heating of the cooking cavity 13, so that the heating effect of the steam intake structure 1 on the food is better .

As shown in Figure 11, the distances between the plurality of intake pipes 2 and the steam distribution plate 20 are respectively equal, so that the steam flow velocity in the same plane tends to be consistent, so that the steam can evenly fill the steam inlet chamber 12, and A stable steam layer is formed in the steam interlayer chamber, so that the steam layer can pass through the steam distribution plate 20 uniformly and stably.

Further, there are multiple exhaust holes 201 on each intake pipe 2, so as to divide the steam during the process of discharging the steam into the steam intake chamber 12 from the intake pipe 2, and increase the coverage area of the steam discharged from the intake pipe 2, Thereby, the flow velocity of the steam can be further reduced, so as to reduce the degree of mixing of steam and air, and increase the speed of filling the cooking chamber 13 with steam, and at least a part of the plurality of exhaust holes 201 are opened on the peripheral wall of the air intake pipe 2, In order to facilitate the setting of more exhaust holes 201 .

Furthermore, part of the exhaust hole 201 on the peripheral wall of the intake pipe 2 is opened toward the top wall of the box body 10, so that the steam flow flowing in from the exhaust hole 201 first passes through the barrier of the top wall, and then flows downward after slowing down. , to further reduce the steam flow rate.

As a preferred embodiment, with reference to Fig. 11, part of the exhaust holes 201 located on the peripheral wall of the air intake pipe 2 are equally spaced, so that the amount of steam discharged from each exhaust hole 201 is more uniform, so that it enters the cooking cavity 13 The density and flow rate of the steam in each place are more uniform, so that the temperature of the cooking cavity 13 can be uniformly raised, so that the steam inlet structure 1 has better heating performance.

According to some embodiments of the present application, since the steam flow velocity near the intake end of the intake pipe 2 is relatively fast, and the steam flow velocity away from the intake end is relatively slow, that is, as the distance between the intake port 11 and the intake end is farther, the steam Therefore, the diameter of the exhaust hole 201 near the intake end of the intake pipe 2 is set smaller than the diameter of the exhaust hole 201 far away from the intake end of the intake pipe 2, so that the flow out from each exhaust hole 201 The steam flow velocity is the same, so that the steam flow velocity at each position in the same plane is uniform, so that the steam can form a stable steam layer in the steam inlet chamber 12, and then the steam layer can pass through the steam distribution plate 20 uniformly and stably , to further reduce the mixing degree of steam and air, increase the speed of steam filling the cooking cavity 13, and also make the steam density in the cooking cavity 13 more uniform everywhere, to ensure that the cooking cavity 13 can be evenly heated everywhere, so that The steam intake structure 1 has a better heating effect on food.

With reference to Fig. 11, a plurality of inlet pipes 2 are arranged flush in the same transverse plane (wherein, the transverse direction is a direction perpendicular to the height direction of the casing 10), and a plurality of inlet pipes 2 are arranged in parallel, so that the steam in the same plane The flow speed tends to be consistent, so that the steam can further form a stable steam layer, so that it is more convenient to fill the cooking cavity 13 evenly, and discharge the air in the cooking cavity 13 stably.

According to some embodiments of the present application, the steam generator is composed of a water pipe and a heating element, and the liquid water is converted into water vapor in the water pipe, and the water vapor is delivered to the interior of the steam appliance, so that the heated water vapor can be heated by the steam The food inside the appliance is heated and cooked. Optionally, the heating element is arranged inside and/or outside the water pipe to heat the water pipe, so as to heat the liquid water in the water pipe through the heated water pipe or directly heat the liquid water so that it is converted from liquid water to steam. That is, the heating element can be arranged inside or outside the water pipe, or both inside and outside the water pipe, so as to improve the heating efficiency and thus the water vapor generation efficiency.

Further, the water pipe is constructed in a form that can expand and contract with the change of the temperature it is subjected to. Since the temperature of the water pipe will change during the operation of the steam generator, that is, the heater continues to heat the water pipe, which will cause the temperature of the water pipe to continue to rise. And when cold water flows into the water pipe, the temperature of the water pipe will decrease temporarily, so the water pipe will realize continuous automatic expansion and contraction with the change of temperature, and because the expansion and contraction of the water pipe will change the inner wall area of the water pipe, so the accumulated on the inner wall of the water pipe The scale will fall off the inner wall of the water pipe during the expansion and contraction process of the water pipe, and will be discharged out of the water pipe along with the flow of water. Therefore, there is no need to manually add cleaning substances such as citric acid to clean the scale in the water pipe, so that the scale in the steam generator can be cleaned more easily. It is convenient and avoids the damage of the steam generator caused by the accumulation of scale in the water pipe.

Moreover, since the embodiment of the present application adopts the form of a channel-type steam generator with heating elements and water pipes, the overall structure can be made flatter, the overall size is smaller, the requirements for installation space are lower, and it is easier to arrange and can meet the level of Or side standing and other installation requirements.

According to some embodiments of the present application, the water pipe is adapted to elongate as its temperature increases and shorten as its temperature decreases, that is, during the operation of the steam generator, the water pipe is heated The temperature rises gradually under the heating of the parts, and the water pipe will gradually elongate with the gradual increase of the temperature. When the steam generator stops heating, the heating part stops heating the water pipe, and the temperature of the water pipe will gradually decrease to room temperature. The water pipe will gradually shorten as the temperature decreases, or, during normal heating, the water flow in the water pipe will quickly take away the heat of the water pipe, and the water pipe will shorten with the sudden drop in temperature.

Therefore, during the operation of the steam generator, the water pipe will expand and contract multiple times, and the scale attached to the inner wall will be separated during the expansion and contraction process, so that the scale can be discharged out of the water pipe together with the water flow, thereby avoiding the accumulation of scale and improving the quality of life. the safety of the steam generator.

According to some embodiments of the present application, the water pipe is configured as a memory alloy piece. Memory alloy is a material composed of two or more metal elements. Memory alloy parts have a shape memory effect through thermoelasticity and martensitic phase transformation and their inversion. Specifically, the water pipe has a two-way memory effect, so that the water pipe can be elongated under the shape memory effect of the memory alloy after being heated, and shortened after the temperature is lowered, so that the water pipe can be separated from the inner wall during the process of elongation and shortening Attached limescale.

Preferably, the water pipe is constructed as a copper-zinc-aluminum shape memory alloy piece. Since the price of copper-zinc-aluminum shape memory alloy parts is relatively low, and their properties are relatively stable, no harmful substances will be produced during high-temperature heating. Therefore, the use of copper-zinc-aluminum shape memory alloys to manufacture water pipes can reduce the manufacturing cost of water pipes and improve steam performance. Generator security. Certainly, the embodiment of the present application is not limited thereto, and the water pipe may also be made of one or more of copper-zinc-tin shape memory alloy, copper-zinc-silicon shape memory alloy, or iron-manganese-silicon shape memory alloy.

According to some embodiments of the present application, the heating element includes: a heating pipe, wherein the water pipe is configured as a round pipe, and the heating pipe is spirally wound on the outside of the round pipe, so that the contact area between the heating pipe and the round pipe is larger, thereby It can ensure the heating effect of the heating tube on the round tube. Moreover, the heating tube is spirally wound on the outside of the round tube, which can make the round tube heated more evenly, so as to avoid the deformation of the water tube during the heating and elongation process caused by the uneven heating of the round tube, thereby improving the steam generator. settings security.

According to some other embodiments of the present application, the heating element includes: a heating plate, the water pipe is configured as a square tube, the heating plate is attached to at least one side wall of the square tube, and the heating plate heats the side wall of the square tube to heat the inside of the square tube. The liquid water in the square tube can be converted from liquid to steam in the square tube, and transported to the inside of the steam appliance. Moreover, since the overall structure of the steam generator composed of the heating plate and the square tube can be a flat square structure, and can be attached to the inner wall of the inner space of the steam appliance, the overall structure of the steam appliance is made more compact, improving Improve the utilization of the internal space of steam appliances.

According to some embodiments of the present application, a heat conduction layer is provided between the heating element and the water pipe, so that the water pipe can be heated more evenly, and avoid deformation of the water pipe during heating and elongation due to uneven heating of the water pipe, thereby further The safety of setting up the steam generator has been greatly improved.

As a preferred embodiment, the heating element includes: an electromagnetic induction coil, and the electromagnetic induction coil is sleeved on the outside of the water pipe to heat the water pipe through the principle of electromagnetic induction heating. Therefore, not only the heating effect is better, but also the structure is simpler and the cost is lower.

According to some embodiments of the present application, the inner wall of the water pipe is configured as a smooth inner wall, so that the scale accumulated on the inner wall of the water pipe is easier to fall off, so that the scale can be completely separated from the water pipe during the expansion and contraction of the water pipe, so as to further improve the performance of the steam generator. descaling effect.

In some other embodiments, the water pipe can be configured as a resistance tube. The resistance tube has a certain resistance value according to its material characteristics, and can convert electrical energy into heat energy. The power supply device can provide electrical energy to the resistance tube, so that the resistance tube can generate heat by itself. . There is a liquid flow space in the resistance tube, and one end of the liquid flow space in the resistance tube is connected to the external liquid source, and the other end is connected to the outlet channel of the steam generator. The device is electrically connected with the resistance tube so as to supply power to the resistance tube and make the resistance tube generate heat. After the power supply device supplies power to the resistance tube, the resistance tube can convert electrical energy into heat energy, and the heat generated by the resistance tube can directly heat the liquid water in the liquid flow space, so that the liquid water flowing from the external liquid source into the liquid flow space After being heated, it can be converted from a liquid state into water vapor, and the converted water vapor is transported from the outlet channel of the steam generator to the interior of the steam appliance, so that the heated water vapor can heat and cook the food inside the steam appliance.

According to some embodiments of the present application, the power supply device includes: a power supply and a power supply wire, the power supply can be a DC power supply or an AC power supply, and the power supply wire is electrically connected between the power supply and the resistance tube to transmit the current of the power supply to the resistance tube end, so that the thermal effect generated by the current flowing through the resistance tube is used to heat the liquid water, so that the liquid water is converted into water vapor.

Further, there are two power supply wires, and the two power supply wires are respectively connected to the two outermost ends of the resistance tube in the extending direction. That is to say, the two power supply wires are suitable to be connected to the liquid inlet end and the gas outlet end of the resistance tube respectively, so that all the resistance materials of the resistance tube can be supported by the voltage at both ends, so that the whole resistance tube can be generated under the action of the power supply. Heat, so that the resistance tube can have the largest heating area, which in turn makes the heating effect of the resistance tube better. As a result, the heating efficiency of the resistance tube is improved, thereby improving the steam production efficiency of the steam generator.

Specifically, one of the power supply wires is connected near the junction of the water pipe and the resistance tube, and the other power supply wire is connected near the junction of the resistance pipe and the outlet channel of the steam generator. As a result, the entire resistance tube can generate heat so that it has the largest heating area.

According to some embodiments of the present application, an insulating protection layer is provided on the outer side of the resistance tube, wherein the insulating protection layer can play an effective insulating role. Therefore, when the resistance tube leaks or other faults occur, the insulating protective layer can prevent the resistance tube from short-circuiting, so as to improve the operation stability of the steam generator, and also prevent the resistance tube from overlapping with the surrounding parts. A short circuit occurs.

Further, the resistance value of the resistance tube is related to the material of the resistance tube, and the resistance tube can be constructed as a metal tube, a silicone tube or a graphite tube, wherein the manufacturing materials of the metal tube, the silicone tube and the graphite tube are relatively cheap, which can reduce The overall cost, and has a good resistivity, and the texture is relatively hard, not easy to damage, so that the resistance tube has better heating effect and setting stability.

According to some embodiments of the present application, the resistance value of the resistance tube is also related to the tube length and wall thickness of the resistor tube. Specifically, the thinner the wall thickness of the resistor tube, the greater the resistance, the smaller the power, and the longer the tube length of the resistor tube. The longer the resistance, the greater the resistance and the smaller the power. Therefore, the wall thickness of the resistance tube is D, 0.1mm≤D≤10mm, that is, the wall thickness of the resistance tube is controlled between 0.1mm and 10mm to ensure the resistance Under the premise of the overall strength of the tube, the resistance tube has a greater resistance value, so that the resistance tube can release more heat to heat the liquid water to generate water vapor.

Further, the length of the resistance tube is L, 5cm≤L≤3m, that is to say, the length of the resistance tube 1 is controlled between 5cm and 3m, so as to ensure that the overall weight and volume of the resistance tube are within a reasonable range Make the resistance tube have a larger resistance value, so that the resistance tube can release more heat to heat the liquid water to generate water vapor.

According to some embodiments of the present application, an on-off protection device is provided on the power supply wire, and the on-off protection device can ensure the operation safety of the steam generator. That is, when the water in the water box is insufficient or the circuit is short-circuited and other abnormal conditions occur, the on-off protection device is suitable for automatically disconnecting the electrical connection between the power supply and the resistance tube, so as to avoid circuit damage caused by the continuous power supply of the power supply to the resistance tube The occurrence of dangerous situations such as thermal runaway or thermal runaway can improve the reliability and safety of steam appliances.

According to some embodiments of the present application, in order to conveniently adjust the temperature and efficiency of the steam generated by the steam generator to realize the free switching of different cooking modes, the embodiment of the present application is also equipped with a voltage regulating device on the power supply wire to pass The voltage at both ends of the resistance tube is adjusted to adjust the heating power of the resistance tube, thereby achieving the purpose of changing the water vapor generation efficiency of the resistance tube and the temperature of the generated water vapor.

As shown in Figures 12-16, according to the steam inlet structure 1 of some other embodiments of the present application, the steam inlet cavity 12 and the cooking cavity 13 are constructed in the box body 10 to form a steam layer, and the steam evenly presses down on the air to quickly discharge the oxygen , to achieve the purpose of anaerobic cooking, so as to achieve food health and facilitate nutrient absorption.

Embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote 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 application, and should not be construed as limiting the present application.

As shown in Figures 12 to 16, the steam inlet structure 1 according to the embodiment of the present application includes: a box body 10 and a steam generating component, and the box body 10 has a steam inlet cavity 12 and a cooking cavity 13, whereby steam enters the box The body 10 can be concentrated in the steam inlet chamber 12 first, and then enter the cooking chamber 13 through the steam inlet chamber 12, so as to slow down the steam flow rate, avoid the direct entrainment of air by the steam, and thus avoid the strong interaction between the steam and the air in the cooking chamber 13. of mixed. Specifically, the steam inlet chamber 12 and the cooking chamber 13 are separated by a partition structure, and the steam distribution plate 20 is provided with a plurality of steam distribution holes 21 arranged at intervals, and the steam distribution holes 21 are connected to the steam inlet chamber 12 and the cooking chamber 13 ; The steam assembly is connected to the box body 10 and communicates with the steam inlet cavity 12 . By setting the steam distribution plate 20 between the steam inlet cavity 12 and the cooking cavity 13, the effect of separating the two cavities is realized, and the structure is simple and easy to construct. A plurality of steam distribution holes 21 can be set on the steam distribution plate 20. The steam inlet chamber 12 and the cooking chamber 13 are connected, so that the steam in the steam inlet chamber 12 can enter the cooking chamber 13 to heat the cooking chamber 13 .

In addition, the plurality of steam distribution holes 21 arranged at intervals can buffer and disperse the steam when the steam enters the cooking cavity 13 from the steam inlet cavity 12, so that the steam output is large and the steam output is even, thereby forming a steam layer. The air in the cooking cavity 13 is evenly pressed out to quickly discharge oxygen to heat the cooking cavity 13, and the purpose of anaerobic cooking can be achieved to facilitate nutrient absorption.

According to the steam inlet structure 1 of the embodiment of the present application, a steam distribution plate 20 having a plurality of steam distribution holes 21 is arranged in the cavity of the box body 10 . The steam distribution plate 20 can separate the steam inlet cavity 12 and the cooking cavity 13, so that the steam can form a steam layer when the cooking cavity 13 is integrated, which is beneficial to discharge the oxygen in the cooking cavity 13, so as to improve the cooking effect and improve the health of the diet.

In actual use, the steam inlet cavity 12 and the cooking cavity 13 can be separated in the cavity of the box body 10 by setting the steam distribution plate 20. The steam enters the steam inlet cavity 12 first, and the steam in the steam inlet cavity 12 is subjected to the steam distribution. The barrier of the plate 20 cannot directly enter the cooking chamber 13, thereby slowing down the steam velocity. The steam that is buffered in the steam inlet cavity 12 enters the cooking cavity 13 from a plurality of steam distribution holes 21 arranged at intervals, so that the steam is dispersed when entering the cooking cavity 13, and the uniformity of steam entering the cooking cavity 13 is improved, and multiple The steam distribution hole 21 can increase the steam output and form a steam layer. With the continuous increase of the steam output, the thickness of the steam layer increases, and the air (oxygen) can be quickly and completely discharged from the cooking cavity 13, and an oxygen-free cooking environment is realized in the cabinet 10. .

Referring to Fig. 15, optionally, the steam inlet chamber 12 is opposite to the cooking chamber 13 along the up and down direction, and the steam inlet chamber 12 is arranged on the top or above the cooking chamber 13, so as to utilize the density difference principle between steam and air to make the steam descend Compress the air to help expel the air. In addition, food can be placed in the cooking cavity 13, so that the food can be heated or cooked in the cooking cavity 13. Therefore, the cooking cavity 13 is located at the lower part of the box body 10, which also facilitates the user's operation.

Specifically, a partition or other structures may be provided on the top of the cooking cavity 13 to separate the top of the cooking cavity 13 to form the steam inlet cavity 12 . The steam inlet chamber 12 can also be set above the cooking cavity 13, that is, the outside of the cooking cavity 13, for example, the cover 11b is set on the outside of the cooking cavity 13, so that between the cover 11b and the top wall of the cooking cavity 13 The steam inlet cavity 12 is constructed. Optionally, the steam inlet cavity 12 can also be located below the cooking cavity 13, so as to utilize the principle that the high-temperature steam tends to rise, thereby improving the heating effect. Specifically, the steam enters the steam inlet cavity 12 , the steam velocity is buffered and slowed down, and then the steam enters the cooking cavity 13 through the steam distribution hole 21 .

Optionally, the ratio of the horizontal projected area of the steam distribution plate 20 to the horizontal cross-sectional area of the cooking cavity 13 is not less than 0.5, that is to say, the size of the steam distribution plate 20 in the casing 10 can be as large as possible to improve the separation As a result, the size difference between the size of the steam distribution plate 20 and the cross-sectional area of the cooking cavity 13 can be reduced as much as possible to improve the heating effect, and the structure is easy to save cost. Furthermore, a plurality of steam distribution holes 21 are evenly spaced on the steam distribution plate 20 and adjacent to the periphery of the steam distribution plate 20, so as to facilitate the uniform discharge of steam, increase the steam output, and facilitate the formation of a steam layer.

Optionally, a plurality of micropores can also be arranged on the steam distribution plate 20, and the steam diffuses after entering the steam inlet cavity 12. During the diffusion process, it can enter the cooking cavity 13 from a plurality of micropores, so as to slow down the steam velocity and improve the output. Steam uniformity, improve exhaust effect.

Optionally, the periphery of the steam distribution hole 21 can be connected with an air guide tube, the air guide tube is connected to the periphery of the steam distribution hole 21, and the air guide tube and the air outlet direction of the steam distribution hole 21 extend in the same direction or have a predetermined angle angle. By setting the air guide tube at the steam distribution hole 21, the steam can be discharged from the air guide tube, and the air guide tube can play a certain guiding effect. When the steam circulates in the steam chamber and is discharged from the steam distribution hole 21, it may be necessary The direction of the air duct is changed, so as to further slow down the flow rate, improve the uniformity of the steam entering the equipment cavity, and improve the cooking effect. Wherein, the air guiding tube and the steam distribution hole 21 can be integrally formed, so as to facilitate manufacture. It is also possible that the air guide tube and the steam distribution hole 21 are formed separately, so as to facilitate maintenance and replacement. For example, the outer circumference of the position where the air guide tube and the steam distribution hole 21 are matched is provided with threads, and when assembling, the The air guide tube is installed on the device, and can also be connected by screws and bolts.

2 to 5, optionally, the steam distribution hole 21 is configured to be drained from the steam inlet chamber 12 to the cooking chamber 13 from top to bottom, combined with the principle of low density of high-temperature steam, so that the steam entering the cooking chamber 13 The steam is configured in a structure similar to a steam wall, which is gradually pressed down so as to expel the air in the cooking cavity 13 quickly. Further, the steam outlet direction of the outlet of the steam generating component is perpendicular to the steam distribution hole 21 or has a predetermined angle, so that when the steam enters the steam inlet chamber 12, it is blocked to a certain extent, which is conducive to reducing the steam flow rate and avoiding the steam directly flowing into the steam inlet chamber 12. The flow velocity enters in the cooking cavity 13 and mixes with air. Specifically, when the steam outlet direction is perpendicular to the steam distribution hole 21, such as the steam outlet direction is vertically downward, the steam distribution hole 21 is arranged horizontally, so that the steam is blocked when it reaches the steam distribution plate 20, and the air velocity is slowed down, so that the steam It is discharged from the steam distribution hole 21 at a relatively stable speed.

13, optionally, the box 10 includes a casing 11a and a steam distribution plate 20, the steam distribution plate 20 is arranged in the casing 11a, and the steam distribution plate 20 separates the steam inlet chamber 12 and the cooking chamber 11a in the casing 11a. The cavity 13 and the steam distribution plate 20 are configured as the steam distribution plate 20 , and a plurality of steam distribution holes 21 are arranged on the steam distribution plate 20 . That is to say, the steam distribution plate 20 separates the space in the box body 10, the upper surface of the steam distribution plate 20 and the housing 11a form the steam inlet chamber 12, and the lower surface of the steam distribution plate 20 and the housing 11a form the cooking cavity 13. A plurality of steam distribution holes 21 are provided on the steam distribution plate 20 to communicate with the steam inlet cavity 12 and the cooking cavity 13, wherein the steam distribution plate 20 can play the role of separating and blocking steam on the one hand, and on the other hand can also The steam enters the cooking cavity 13 at a relatively uniform and stable speed, so as to improve the heating effect on the cooking cavity 13 and facilitate the discharge of oxygen.

Optionally, the steam distribution plate 20 is horizontally arranged on the top of the housing 11a, so that the cooking cavity 13 in the box body 10 can have a larger space, which is convenient for users to use. Specifically, the steam distribution plate 20 and the top wall of the housing 11a A steam inlet cavity 12 is formed between the inner surfaces of 11c, which is beneficial to simplify the structure and facilitate the gradual sinking of the steam to discharge the air.

Referring to FIG. 2 , according to the steam intake structure 1 of a specific embodiment of the present application, the casing 11a is in the shape of a hollow square, and the top of the casing 11a is constructed with an upward convex convex structure 14, and the convex structure 14 is square. The steam distribution plate 20 is horizontally arranged in the casing 11a, specifically, the steam distribution plate 20 is arranged directly below the convex structure 14, and separates the inside of the casing 11a into two parts, that is, the upper surface of the steam distribution plate 20 and the convex hull structure. The inner wall of the structure 14 constitutes the steam inlet chamber 12 , the lower surface of the steam distribution plate 20 and the inner wall of the housing 11 a constitute the cooking chamber 13 , and the steam inlet chamber 12 and the cooking chamber 13 communicate directly through the steam distribution hole 21 . The steam distribution holes 21 can be arranged in an array on the steam distribution plate 20 to improve the uniformity of steam outlet. More specifically, the steam distribution plate 20 and the housing 11a can be integrally formed, or the steam distribution plate 20 can be plugged into the inner wall of the housing 11a, so as to facilitate disassembly, replacement and cleaning. The groove is provided on the periphery of the steam distribution plate 20 at the convex part matched with the groove, so as to insert the steam distribution plate 20 horizontally into the casing 11a.

3, optionally, the box body 10 includes a housing 11a and a cover 11b. A cooking cavity 13 is constructed in the housing 11a. The cover 11b is covered on the outside of the housing 11a. The outer surface of the cover 11b and the housing 11a A steam inlet cavity 12 is formed between them, and the part of the housing 11a corresponding to the cover 11b is configured as a steam distribution plate 20, and a plurality of steam distribution holes 21 are provided on the part of the housing 11a corresponding to the cover 11b. That is to say, the steam distribution plate 20 can also be directly arranged on the casing 11a to facilitate the structure and simplify the structure. The cover 11b is covered on the outside of the casing, and the steam inlet chamber 12 is formed between the cover 11b and the casing. When viewing the inside of the steam inlet chamber 12, it is only necessary to open the cover body 11b.

Optionally, the part of the housing 11a corresponding to the cover 11b protrudes toward the outside of the housing 11a and is embedded in the cover 11b, so as to improve the tightness of the fit between the cover 11b and the housing 11a, which is beneficial to control the air intake chamber 12 The space increases the use space of the cooking cavity 13, which provides convenience for the user to use the device.

Optionally, the housing 11a includes a top wall 11c, a plurality of steam distribution holes 21 are arranged on the top wall 11c, the cover body 11b covers the outside of the top wall 11c to construct a steam inlet cavity 12 in the cover body 11b, and the cover body 11b covers a plurality of steam distribution holes 21, so that the steam entering the steam inlet cavity 12 can enter the cooking cavity 13 through the steam distribution holes 21, so as to improve the heating effect and facilitate the rapid removal of oxygen.

Referring to Fig. 14, according to another specific embodiment of the steam inlet structure 1 of the present application, the casing 11a is in a hollow square shape, the top wall 11c of the casing 11a protrudes upwards, and a plurality of steam distribution points are arranged at intervals on the top wall 11c. The hole 21 is covered by the cover 11b on the outside of the upwardly protruding top wall 11c of the housing 11a, and a steam inlet chamber 12 is formed between the top wall 11c and the cover 11b, wherein the top wall 11c is configured as a square shape protruding outward. Protruding structure, a plurality of steam distribution holes 21 are arranged in an array on the surface of the protruding structure, and the protruding structure is embedded in the cover body 11b. When installed, the lower periphery of the cover body 11b cooperates with the outer periphery of the top wall 11c to Cover the box body 10.

It should be noted that, in this application, the circular shape of the steam distribution hole 21 and the arrangement of a plurality of steam distribution holes 21 in an array are mainly used as an example for illustration, but this is not a limitation to the protection scope of the application, and it can also be used in the application The shape and arrangement of the steam distribution holes 21 are slightly changed, as long as the effect of slowing down the steam velocity can be achieved. For example, the steam distribution hole 21 may be elongated, or the size of the steam distribution hole 21 may be different.

Optionally, the steam generating assembly includes: a water box 6, a water pump 3 and a steam generator 4, the water pump 3 communicates with the water box 6, and the steam generator 4 is respectively connected with the water pump 3 and the tank 10, that is, the water pump 3 is respectively connected with the water box 6 and the steam generator 4, when in use, the water pump 3 extracts water from the water box 6 and sends it into the steam generator 4, and the steam generator 4 heats the water into steam and sends it into the box body 10 to heat the box body 10 . 15, the water box 6 is connected to the water pump 3 through the pipeline 5, the water pump 3 is connected to the steam generator 4 through the pipeline 5, and the steam generator 4 is connected to the upper part of the box body 10 through the pipeline 5 to transport the steam to Into the steam chamber 12 of the box body 10. In addition, the pipeline 5 extends upwards to the top of the box body 10 , since high-temperature steam tends to rise, so the upward extension of the pipeline 5 facilitates steam transportation.

The steam intake structure 1 of a specific embodiment of the present application will be described below with reference to the accompanying drawings.

Referring to FIG. 12 to FIG. 16 , the steam intake structure 1 according to the embodiment of the present application includes: a tank 10 , a water box 6 , a water pump 3 , a steam generator 4 and a pipeline 5 . Specifically, the water pump 3 is respectively connected to the water box 6 and the steam generator 4 through the pipeline 5 , and the steam generated by the steam generator 4 is transported to the top of the tank 10 through the pipeline 5 . The box body 10 has a steam inlet cavity 12, a cooking cavity 13 and a steam distribution plate 20, wherein a plurality of steam distribution holes 21 are arranged at intervals on the steam distribution plate 20.

15 and 16, more specifically, the water pump 3 pumps the water in the water box 6 into the steam generator 4, and the steam generator 4 vaporizes the water into steam b and sprays it into the steam inlet chamber 12 on the top of the box body 10, The steam discharged to the cooking cavity 13 through the steam distribution plate 20 structure steam distribution holes 21 forms a uniform steam layer c, and as the thickness of the steam layer c increases, the air a (oxygen) is quickly and completely discharged from the cooking cavity 13, and in the cabinet Realize anaerobic cooking environment within 10. The steam inlet cavity 12 is arranged on the top of the box body 10 , one end is connected to the steam outlet of the steam generator 4 , and the other end passes steam into the cooking cavity 13 through the steam distribution hole 21 of the steam distribution plate 20 . Wherein, the density of the steam is 0.6kg/m3, and the density of the air is 1.293kg/m3, that is, the density of the steam is less than that of the air, and the steam is lighter than the air, and will float in the head space in the casing 10. Referring to Fig. 16, at the same time, in order to ensure the effect of removing air a, a steam distribution plate 20 with steam distribution holes 21 should be arranged on the top of the cavity of the box body 10. The steam distribution plate 20 of the hole 21 is discharged from the steam inlet chamber 12 to form a uniform steam layer c. When the amount of steam is continuously increasing, the steam layer c is continuously thickened, and the compressed air layer moves down, and the air a is quickly and completely discharge. In this way, using the principle of density difference between steam and air, by constructing the steam inlet cavity 12 and the cooking cavity 13 in the box body 10, a steam layer c is formed, and the air (oxygen) is evenly pressed down to quickly discharge the air (oxygen) to form an oxygen-free cooking environment , which is conducive to rapid heating and achieves the purpose of anaerobic cooking. In the related art, the heating system includes a water box 6', a water pump 3', a steam generator 4', and a cavity 10'. The steam generator 4' and the cavity 10' are connected by a pipe 5', and the opening on the side wall of the cavity is connected to the steam inlet pipe, see Fig. 17 . This steam intake method will result in a high steam intake flow rate, strong entrainment and mixing of steam and air, and sufficient mixing of air and steam, making it impossible to quickly and completely discharge oxygen. The two main reasons for the presence of oxygen in the cavity in the related art are: 1. The steam flow rate is fast, entraining air, causing the two to mix (mix), and cannot be separated and discharged; After the cavity, it will quickly spread to various places in the cavity. That is to say, in the related art, the way of unilaterally entering steam may easily lead to strong mixing of steam and air, and the oxygen cannot be exhausted quickly and completely, resulting in the reduction of nutritional elements in food, which is not conducive to healthy diet.

In the description of this application, the terms "transverse", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", " The orientation or positional relationship indicated by "top", "bottom", "inner", "outer" and "circumferential" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, rather than Nothing to indicate or imply that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation should therefore not be construed as limiting the application.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In the description of this specification, descriptions referring 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 , structure, material or characteristic is included in at least one embodiment or example of the present application. 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. Those skilled in the art may 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 application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations on the present application, and those skilled in the art can make the above-mentioned The embodiments are subject to changes, modifications, substitutions and variations.

Claims

A steam inlet structure, including:

A box body, the box body is provided with a steam inlet;

A steam distribution plate, the steam distribution plate divides the space in the box into a steam inlet cavity and a cooking cavity, the steam distribution plate is provided with a plurality of steam distribution holes, the steam inlet cavity and the steam inlet connected.
The steam inlet structure according to claim 1, further comprising a baffle, which divides the steam inlet chamber into a plurality of steam distribution chambers, and each of the steam distribution chambers is at least connected to one of the steam distribution chambers. The holes are connected.
The steam inlet structure according to claim 2, wherein there are multiple partitions arranged at intervals along the steam inlet direction;

And/or, the distance between every two adjacent partitions gradually increases along the steam inlet direction;

And/or, the partition is perpendicular to the steam inlet direction.
The steam inlet structure according to claim 2, wherein a plurality of steam holes arranged at intervals are arranged on the separator.
The steam inlet structure according to claim 4, wherein the distance between every two adjacent steam passage holes on the baffle gradually decreases from the middle of the baffle to both ends;

And/or, the diameter of the steam vent gradually increases from the middle of the separator to both ends.
The steam inlet structure according to any one of claims 1-5, wherein each of the steam distribution chambers communicates with a plurality of the steam distribution holes.
The steam inlet structure according to claim 6, wherein, among the plurality of steam distribution holes communicated with each of the steam distribution chambers, the distance between each adjacent two is gradually reduced from the middle to both ends of the steam distribution chamber. Small;

And/or, the apertures of the plurality of steam distribution holes communicated with each of the steam distribution chambers gradually increase from the middle to both ends of the steam distribution chamber.
The steam inlet structure according to any one of claims 1-7, wherein, in the steam inlet direction, the distance between every two adjacent steam distribution holes gradually decreases along the steam inlet direction;

And/or, the aperture of the steam distribution hole gradually decreases in the steam inlet direction;

And/or, the steam inlet is arranged on at least one side plate of the steam inlet cavity.
The steam inlet structure according to claim 1, wherein the steam distributor plate is provided with steam inlet grooves, and the steam inlet grooves communicate with the steam inlet cavity and the steam inlet respectively.
The steam intake structure according to claim 9, wherein the upper surface of the steam intake groove is opened to communicate with the steam intake cavity;

And/or, the steam inlet communicates with at least one end of the steam inlet groove;

And/or, in the direction from being close to the steam inlet groove to being away from the steam inlet groove, the distance between every two adjacent steam distribution holes gradually decreases;

And/or, in the length direction of the steam inlet groove, the diameter of the steam distribution hole gradually increases from the direction close to the steam inlet hole to the direction away from the steam inlet hole;

And/or, in the length direction of the steam inlet groove, the distance between every two adjacent steam distribution holes gradually decreases from the direction close to the steam inlet hole to the direction away from the steam inlet hole;

And/or, the steam inlet groove is formed on the front edge of the steam distribution plate;

And/or, the steam inlet groove is formed by the concave of the steam distribution plate;

And/or, the steam inlet hole is formed on the side wall of the box;

And/or, the steam inlet hole communicates with one end of the steam inlet groove and faces the other end;

And/or, the steam inlet groove is a square groove.
The steam intake structure according to claim 9, wherein the steam intake groove is arranged on one side edge of the steam distribution plate.
The steam intake structure according to claim 11, wherein the diameter of the steam distribution hole gradually increases from the direction close to the steam intake slot to the direction away from the steam intake slot.
The steam intake structure according to claim 1, further comprising an intake pipe, at least a part of the intake pipe protrudes into the steam intake cavity, and an exhaust hole is opened on the at least part of the intake pipe.
The steam inlet structure according to claim 13, wherein the steam distribution plate is arranged between the cooking cavity and the steam intake cavity, and a boundary is defined between the steam distribution plate and the top wall of the box. In the steam distribution cavity, steam distribution holes are opened on the steam distribution plate.
The steam inlet structure according to claim 14, wherein the steam distribution plate is multi-layer, and the multi-layer steam distribution plate is spaced apart from top to bottom, and is located between the bottommost steam distribution plate and the top wall The air inlet and outlet chambers are limited.
The steam intake structure according to claim 15, wherein the intake pipe is located between the uppermost steam distribution plate and the top wall;

And/or, the steam distribution holes on the two adjacent layers of the steam distribution plates are staggered;

And/or, each layer of the steam distribution plate has a plurality of the steam distribution holes, and the plurality of the steam distribution holes are evenly distributed.
The steam intake structure according to claim 14, wherein the exhaust hole and the steam distribution hole are arranged in a staggered manner.
The steam intake structure according to claim 14, wherein at least a part of the top wall protrudes outward to form a protrusion, and the intake pipe penetrates inward from the peripheral wall of the protrusion.
The steam intake structure according to claim 18, wherein there are multiple intake pipes, and the plurality of intake pipes pass inward from different directions of the peripheral wall.
The steam intake structure according to claim 19, wherein the distances between the plurality of intake pipes and the steam distribution plate are respectively equal.
The steam inlet structure according to claim 1, further comprising a steam generating component connected to the tank and communicating with the steam inlet chamber.
The steam inlet structure according to claim 21, wherein the steam inlet chamber is opposite to the cooking chamber along the vertical direction, and the steam inlet chamber is arranged on the top or above the cooking chamber.
The steam inlet structure according to claim 22, wherein the ratio of the horizontal projected area of the steam distribution plate to the horizontal cross-sectional area of the cooking cavity is not less than 0.5, and a plurality of the steam distribution holes The plates are evenly spaced and adjacent to the periphery of the steam distribution plate;

And/or, the steam distribution hole is configured to discharge from the steam inlet cavity to the cooking cavity from top to bottom, and the outlet direction of the steam generating component is perpendicular to the steam distribution hole or has a predetermined angle angle.
The steam intake structure according to claim 21, wherein the steam generating component comprises:

water tank;

a water pump, the water pump communicates with the water box;

A steam generator, the steam generator is respectively connected with the water pump and the tank.
The steam inlet structure according to claim 1, wherein the steam distribution plate is horizontally arranged on the top of the box, and the inlet is constructed between the steam distribution plate and the inner surface of the box top wall. Vapor cavity.
The steam intake structure according to claim 25, wherein the box body includes a casing and a cover, the cooking cavity is constructed in the casing, the cover is on the outside of the casing, and the cover The steam inlet cavity is constructed between the body and the outer surface of the housing, the part of the housing corresponding to the cover is configured as the steam distribution plate, and the plurality of steam distribution holes are arranged on the on the part of the housing corresponding to the cover.
The steam intake structure according to claim 26, wherein a part of the housing corresponding to the cover protrudes outward from the housing and is embedded in the cover;

And/or, the housing includes a top wall, the plurality of steam distribution holes are arranged on the top wall, and the cover is covered on the outside of the top wall to configure the steam inlet in the cover. cavity, and the cover covers the plurality of steam distribution holes.
A cooking appliance, comprising the steam intake structure according to any one of claims 1-27.