CN216060153U

CN216060153U - Superheated steam cooking device

Info

Publication number: CN216060153U
Application number: CN202121603895.XU
Authority: CN
Inventors: 姚青; 杜鑫; 付远华; 郑伟
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2022-03-18
Anticipated expiration: 2031-07-14

Abstract

The utility model relates to a superheated steam cooking device, which comprises an inner container, a steam generator arranged outside the inner container, a heater arranged in the inner container, a support arranged in the inner container and a steam channel arranged on the wall surface of the inner container, wherein the inlet of the steam channel is communicated with the steam generator, and the outlet of the steam channel is communicated with the inner container. The support is a heat transfer element, the support is matched with an extending path of the steam channel and is attached to the inner wall of the inner container, clamping grooves are formed in the support, bosses are oppositely arranged on two side walls of each clamping groove along the extending direction of the support, the heater is clamped between the bosses of the clamping grooves and is formed with a gas flow channel with the inner wall of each clamping groove, and notches communicated with the gas flow channel are formed in the bosses. This superheated steam cooking device can be effectively preheated before steam is heated by the secondary, and steam can be by the abundant heating, and output superheated steam stability is high.

Description

Superheated steam cooking device

Technical Field

The present invention relates to a superheated steam cooking device.

Background

Along with the improvement of living standard of people, people need the continuous extension of the demand dimension of culinary art, not only must cook the health of food, but also must guarantee the taste of cooking food. Therefore, the steaming and baking integrated machine and the steaming and baking micro integrated machine with steaming and baking functions also need to have corresponding functions to match with the requirements of users. When the cooking device is used for steaming, the commonly used steam is saturated steam at 100 ℃, the saturated steam is easily contacted with the inner surface of the cooking chamber to generate condensed water drops, the condensed water drops easily fall into food, and heat is absorbed, so that the power resource is wasted, and the taste of the food is influenced. In addition, for cooking meat such as with skin, if a cooking manner of roasting is adopted, the drying may be too much. Cooking with steaming may result in excess fat. On the basis of roasting, over-temperature steam is adopted for cooking, so that healthy and delicious cooking of the skin-covered meat can be realized.

For example, the steam cooking device disclosed in the utility model discloses a chinese utility model patent with an authorization notice number CN212280989U (application number 202020718220.9) an overheated steam cooking stove, and chinese utility model patent with an authorization notice number CN201888712U (application number 201020558568.2) a secondary heating mechanism of an embedded electric steam box, wherein the steam cooking device all leads generated steam into the cavity provided with the heating pipe to carry out secondary heating, forms overheated steam, and then leads into the inner container again. And can set up the fan in the heating chamber, and then promote the air current rapid movement through fan work, guarantee that the steam of secondary heating can effectively let in the inner bag, can make the homogeneity of heating intracavity gas temperature in addition. However, the flow speed of the steam can be increased by the operation of the fan, so that the heat exchange time of the steam in the heating cavity is short, the heat absorption capacity of the steam for secondary heating cannot be ensured, the heating temperature of the generated superheated steam is limited, and the stability of the heating temperature is poor.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the present invention is to provide a superheated steam cooking device capable of efficiently preheating steam before the steam is secondarily heated, sufficiently heating the steam, and outputting superheated steam with high stability, in view of the above-mentioned prior art.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a superheated steam cooking device, includes the inner bag, sets up the steam generator outside the inner bag, sets up the heater in the inner bag, its characterized in that: the steam generator is communicated with the steam channel, and an outlet of the steam channel is communicated with the inner container;

the support is a heat transfer element, the support is matched with an extending path of the steam channel and is attached to the inner wall of the inner container, clamping grooves are formed in the support, bosses are oppositely arranged on two side walls of each clamping groove along the extending direction of the support, the heater is clamped between the bosses of the clamping grooves, a gas flow channel is formed between the heater and the inner wall of each clamping groove, and notches communicated with the gas flow channel are formed in the bosses.

In order to increase the contact area between the steam channel and the support, further increase the heat exchange area and improve the heat exchange efficiency, a groove is arranged on the attaching surface attached to the inner wall of the inner container in the support, and the outer wall of the steam channel is embedded into the groove.

In order to increase the heat exchange area between the hot gas and the support and further better realize the heat transfer to the steam channel, the side wall of the groove is provided with an opening communicated with the space in the groove, and a gap communicated with the opening is arranged between the inner wall of the groove and the outer wall of the steam channel.

In order to ensure the circulation of hot gas and improve the heat exchange rate of the bracket on the basis of ensuring high-efficiency heat transfer, the bracket is also internally provided with a vent hole communicated with the gas flow passage.

Preferably, the steam channel is annular, and the bracket is annular or two sections of arcs oppositely arranged;

the opening of draw-in groove is inboard towards the arc of support, the air vent is seted up in the bottom that corresponds the draw-in groove for radial slope to the incline direction of air vent concentrates the slope for middle part, so prolonged the length of air vent, increased heat exchange area, can reduce the energy loss of steam simultaneously.

In order to prolong the flow path of hot gas in the flow channel and prolong the heat exchange time, the mouths of the vent holes on the inner wall of the clamping groove are arranged in a staggered mode with the notches.

In order to control the on-off of the steam conveniently, a valve body is arranged at the position, close to the outlet, of the steam channel.

Optionally, the steam channel is integrally formed in the wall surface of the inner container; or

The steam pipe is arranged on the outer wall surface of the inner container, the steam channel is formed by the channel in the steam pipe, the wall surface of the inner container is sunken towards the groove to form a containing groove, and the steam pipe is arranged in the containing groove.

In order to effectively realize secondary heating of steam, the inner container is provided with a heating cavity and a cooking cavity which are separated by a partition plate, and the partition plate is provided with a through hole;

the heater sets up in the heating chamber, steam channel sets up on the inner bag wall that the heating chamber corresponds, steam channel's export is linked together with the heating chamber.

In order to improve the hot air mobility in the heating cavity, the exchange efficiency is improved, the uniformity of the temperature in the heating cavity is ensured, meanwhile, the superheated steam is conveniently provided for the cooking cavity, and a fan is further arranged in the heating cavity.

In order to improve the heat release range in the heating cavity and effectively utilize the component installation space in the heating cavity, the heater is a heating pipe arranged in an annular disc mode, and the heating pipe is arranged on the periphery of the fan in a surrounding mode.

In order to pertinently provide superheated steam for the central area in the cooking cavity and improve the utilization rate of the superheated steam in the cooking process, the middle part of the steam channel is also connected with a pressure relief pipe, and the outlet of the pressure relief pipe is correspondingly communicated with the central area of the heating cavity.

Preferably, a pressure release valve is arranged in a central area corresponding to the heating cavity on the wall surface of the inner container provided with the steam channel, an outlet of the pressure release valve is communicated with the heating cavity, and an inlet of the pressure release valve is connected with the steam channel.

In order to ensure the smoothness of the steam flowing in the steam channel, the inlet section of the steam channel is gradually bent along the extending direction and is communicated with the steam generator.

Compared with the prior art, the utility model has the advantages that: according to the superheated steam cooking device, the steam channel is attached to the support for fixing the heater to realize heat transfer, and then the steam is preheated in a heat transfer mode before being secondarily heated by the heater, so that the effect of secondary heating in the later period is improved, a higher and stable temperature can be achieved in the subsequent shorter heating process, and the superheated steam cooking effect is facilitated. And through the structure of the clamping groove on the support, an airflow channel with higher heat is formed between the support and the heater, the heat exchange amount is increased, the preheating temperature of steam is increased, the temperature of the steam after secondary heating is favorably increased, and the temperature stability of the over-temperature steam is improved.

Drawings

Fig. 1 is a perspective view showing a partial structure of a superheated steam cooking device according to an embodiment of the present invention.

Fig. 2 is an exploded perspective view of fig. 1.

Fig. 3 is a cross-sectional view of fig. 1.

Fig. 4 is a partially enlarged view of fig. 3.

Fig. 5 is a perspective view of a stent in an embodiment of the utility model.

FIG. 6 is a drawing showing the fitting and installation of the bracket and the heater according to the embodiment of the present invention.

Detailed Description

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

As shown in fig. 1 to 6, the superheated steam cooking device of the present embodiment includes a housing, an inner container 1 disposed in the housing, a steam generator disposed outside the inner container 1, a heater 2 disposed in the inner container 1, and a fan 6.

Wherein heating chamber 111 and the culinary art chamber that has through baffle 11 isolated have in the inner bag 1, have through-hole 110 on the baffle 11, realize the gas flow between heating chamber 111, the culinary art chamber through-hole 110 like this, can export the superheated steam after the hot-air in the heating chamber, the secondary heating to the culinary art intracavity under the effect of fan 6 to the culinary art intracavity is cooked in the realization.

Specifically, the liner 1 in this embodiment is opened forward, the liner 1 has a circumferential wall penetrating forward and backward, the partition 11 covers the opening provided at the rear portion of the circumferential wall of the liner 1, a rear wall plate is provided at the rear portion of the partition 11 corresponding to the region where the through hole 110 is provided, a heating chamber 111 is formed between the rear wall plate and the partition 11, and the heater 2 and the blower 6 are provided in the heating chamber 111. Of course, the partition plate may be provided above or on the side of the inner bag 1 as necessary.

The steam generator, which may be a variety of products known in the art, is disposed within the cabinet.

The wall surface of the inner container 1 is provided with a steam passage 4, and the steam passage 4 is specifically attached to the outer wall surface of the rear wall plate to facilitate heat exchange with the inside of the heating chamber 111. The inlet of the steam channel 4 is connected with the outlet end of the steam generator, the outlet of the steam channel 4 is communicated with the heating cavity 111 in the inner container 1, so that the steam output from the steam generator enters the heating cavity 111 in the inner container 1 under the guiding action of the steam channel 4, and forms over-temperature steam under the secondary heating action of the heater 2, and then is output to the cooking cavity under the action of the fan 6 for cooking.

In this embodiment, in order to increase the heat exchange path between the steam channel 4 and the heating cavity 111, the steam channel 4 is annular, specifically, when the steam inlet of the steam channel 4 is located at the middle position of the lower portion of the rear wall plate, the steam channel 4 is curved toward the left and right sides of the rear wall plate and gathers together at the middle of the upper portion of the rear wall plate to form the outlet of the steam channel 4, and then the outlet of the steam channel 4 is communicated with the heating cavity 111 in the inner container 1. The inlet section of the steam channel 4 is gradually bent along the extension direction to be communicated with the steam generator, so that the smooth output of the steam can be ensured. In order to effectively control the on-off of the steam in the steam channel 4, a switchable valve body 5 is arranged at the position of the steam channel 4 close to the outlet.

In addition, the steam channel 4 may be integrally formed in the wall surface of the inner container 1 according to a specific design. The steam channel 4 can also be a steam pipe which is independently arranged on the outer wall surface of the inner container 1, and the steam channel is formed by the channels in the steam pipe.

In order to increase the heat radiation area of the heater 2 in the heating cavity 111 and facilitate heat transfer to the steam channel 4, the heater 2 in this embodiment adopts a heating pipe coiled in an annular shape matching the shape of the steam channel 4, and the heating pipe can be coiled into at least two layers as required. And the heating pipe is arranged around the periphery of the fan 6, and the heat radiation of the heating pipe can be accelerated along with the work of the fan 6, so that the flowing speed of hot gas in the heating cavity 111 is higher, the heat transfer speed is higher, and the heat uniformity is better. Specifically, the motor portion of the fan 6 is fixedly disposed on the rear wall, and the fan blade portion of the fan 6 is disposed in the heating cavity 111 and inside the heating tube.

The heater 2 is fixed on the inner wall of the inner container 1 through the bracket 3, specifically, the heater 2 in this embodiment is fixed on the rear wall plate of the inner container 1 through the bracket 3, the bracket 3 is integrally annular or two sections of arcs which are oppositely arranged, the bracket 3 is made of heat exchange material, the rear wall plate is also made of material which can perform heat exchange, and the bracket 3 is attached on the rear wall plate of the inner container 1.

In order to enable an effective heat transfer between the heater 2 and the steam channel 4, the holder 3 is attached to the inner wall of the inner container 1 in conformity with the extension path of the steam channel 4. The holder 3 is a heat transfer member made of a heat transfer material. In addition, in order to increase the thermal contact area between the support 3 and the steam channel 4 and improve the heat exchange rate, in the embodiment, the groove 33 is arranged on the attaching surface of the support 3 attached to the inner wall of the inner container 1, and the outer wall of the steam channel 4 is embedded in the groove 33, so that the heat transfer between the three side surfaces of the outer wall of the steam channel 4 and the support 3 can be realized, the heat exchange area is greatly increased, and the heat exchange speed is improved.

If the steam passage 4 is formed integrally in the wall surface of the inner tub 1, the inner tub 1 is provided to be convex toward the holder 3 and to be fitted into the groove 33 of the holder 3, corresponding to the position of the holder 3. If the steam channel 4 is a steam pipe which is arranged independently, the wall surface of the inner container 1 is sunken towards the groove 33 of the support 3 to form an accommodating groove, the steam pipe is arranged in the accommodating groove, the outer wall of the steam pipe is tightly attached to the groove wall of the accommodating groove, and therefore heat transfer between the steam pipe and the support 3 is achieved more easily.

A groove 33 is opened on the surface of the base 31 for attaching to the inner wall of the inner container 1. The sidewall of the recess 33 is opened with an opening 331 communicating with the space in the recess 33, and the opening 331 is disposed along the radial direction of the bracket 3. And a gap 34 communicating with the opening 331 is provided between the inner wall of the groove 33 and the outer wall of the steam passage 4. The hot air and the steam in the heating cavity can circulate through the channel formed by the opening 331 and the gap 34, so that the effective circulation of the air and the steam between the inside and the outside of the heater 2 is realized, and the consistency of the gas temperature in the heating cavity 111 is good. The openings 331 and the gaps 34 also increase the contact area of the hot air and the steam with the bracket 3, so that the heat exchange area is larger, and thus the heat can be more quickly transferred to the bracket 3 and transferred to the steam channel 4 through the bracket 3. And because steam channel 4 is wrapped up in recess 33 of support 3 for steam channel 4 has increased the heated area of steam channel 4, and is better to the preheating effect of steam in steam channel 4.

In addition, the bracket 3 is provided with a clamping groove 31, and the opening of the clamping groove 31 in the embodiment faces to the arc-shaped inner side of the bracket 3. The both sides wall of draw-in groove 31 is provided with boss 311 along the extending direction of support 3 relatively, heater 2 card is established between the boss 311 of draw-in groove 31 and is formed with gas flow channel 32 with the inner wall of draw-in groove 31 between, set up the breach 3111 that is linked together with gas flow channel 32 on the boss 311, this breach 3111 is seted up on the edge that boss 311 and heater 2 contacted, heater 2 card is established between two boss 311 after, then form the aperture between breach 3111 and the heater 2, realize the gas circulation between gas flow channel 32 and the draw-in groove 31 outer space through the aperture.

The support 3 is further provided with a plurality of vent holes 35 communicated with the gas flow passage 32, the vent holes 35 are obliquely formed at the bottom corresponding to the clamping grooves 31 relative to the radial direction, and the inclination direction of the vent holes 35 is intensively inclined towards the middle. And the mouths of the vent holes 35 on the inner wall of the card slot 31 are staggered with the notches 3111. During operation, the gas flow channel 32 formed by enclosing the clamping groove 31, the boss 311 and the heater is relatively sealed, so that efficient heat transfer between the heat generated by the heater and the bracket can be realized, and the temperature of gas in the gas flow channel 32 is relatively higher. And under the effect of fan work, drive the gas flow of heating intracavity, gaseous not only can realize the circulation of air current passageway and outside through breach 3111, can also realize the circulation of air current passageway and outside through the blow vent, can also realize the circulation of air current passageway and outside through air vent 35, breach 3111, improve the heat exchange efficiency of heating intracavity, improve the homogeneity of heating intracavity temperature. And because the vent holes 35 are obliquely arranged relative to the radial direction and are intensively inclined towards the middle position, the high-heat airflow in the air flow passage 32 is more favorably closed to the position close to the support, and the heat exchange rate between the support and the hot air is improved. Moreover, the mouth parts of the vent holes 35 on the inner wall of the clamping groove 31 are staggered with the notches 3111, so that the flowing speed of high-heat airflow in the air flow passage 32 is relatively reduced, the support is in full thermal contact with the high-heat airflow in the air flow passage 32, and the heat loss is reduced.

The working method of the superheated steam cooking device comprises the following steps: when this superheated steam cooking device need utilize superheated steam to cook, control steam generator, heater 2, fan 6 work, steam that steam generator produced enters into steam channel 4, heater 2 is when heating the interior gas of heating chamber 111, with the heat through the heat exchange effect between support 3 and the steam channel 4 and transmit steam channel 4, steam channel 4 utilizes heat transfer heat to preheat steam in term, so can promote the temperature of the steam in steam channel 4. The control valve body 5 is opened, the preheated steam is input into the heating cavity 111 of the inner container 1, the heater 2 in the heating cavity 111 further secondarily heats the preheated steam to form high-temperature superheated steam, and the high-temperature superheated steam is output into the cooking cavity of the inner container 1 through the action of the fan 6 to perform cooking work. In the process, because the steam is preheated before secondary heating is carried out, and the steam amount per unit volume in the steam channel 4 is small, the lifting amount and the stability of the steam temperature are higher, and after the secondary heating is carried out in the heating cavity 111, the temperature lifting amount of the over-temperature steam is larger, the stability is high, and the cooking effect of the over-temperature steam is more favorably realized.

Claims

1. The utility model provides a superheated steam cooking device, includes inner bag (1), sets up the steam generator outside inner bag (1), sets up heater (2) in inner bag (1), its characterized in that: the steam boiler also comprises a bracket (3) arranged in the inner container (1) and a steam channel arranged on the wall surface of the inner container (1), wherein the steam channel (4) is communicated with the steam generator, and the outlet of the steam channel (4) is communicated with the inner container (1);

the support (3) is a heat transfer element, the support (3) is matched with an extending path of the steam channel (4) and is attached to the inner wall of the inner container (1), a clamping groove (31) is formed in the support (3), bosses (311) are oppositely arranged on two side walls of the clamping groove (31) along the extending direction of the support (3), the heater (2) is clamped between the bosses (311) of the clamping groove (31) and is provided with a gas flow channel (32) between the bosses and the inner wall of the clamping groove (31), and a notch (3111) communicated with the gas flow channel (32) is formed in the boss (311).

2. The superheated steam cooking device according to claim 1, wherein: a groove (33) is formed in the attaching surface of the bracket (3) attached to the inner wall of the inner container (1), and the outer wall of the steam channel (4) is embedded into the groove (33).

3. The superheated steam cooking device according to claim 2, wherein: an opening (331) communicated with the space in the groove (33) is formed in the side wall of the groove (33), and a gap (34) communicated with the opening (331) is formed between the inner wall of the groove (33) and the outer wall of the steam channel (4).

4. The superheated steam cooking device according to claim 1, wherein: the support (3) is also internally provided with a vent hole (35) communicated with the gas flow passage (32).

5. The superheated steam cooking device according to claim 4, wherein: the steam channel (4) is annular, and the bracket (3) is annular or two sections of arc-shaped parts which are oppositely arranged;

the opening of the clamping groove (31) faces the arc-shaped inner side of the support (3), the vent holes (35) are obliquely formed in the bottom corresponding to the clamping groove (31) relative to the radial direction, and the oblique direction of the vent holes (35) is in centralized inclination towards the middle.

6. The superheated steam cooking device according to claim 5, wherein: the mouth parts of the vent holes (35) on the inner wall of the clamping groove (31) and the notches (3111) are arranged in a staggered mode.

7. The superheated steam cooking device according to any one of claims 1 to 5, wherein: and a valve body (5) is arranged at the position, close to the outlet, of the steam channel (4).

8. The superheated steam cooking device according to claim 2 or 3, wherein: the steam channel (4) is integrally formed in the wall surface of the inner container (1); or

The steam pipe is arranged on the outer wall surface of the inner container (1), the steam channel is formed by the channel in the steam pipe, the wall surface of the inner container (1) is sunken towards the groove (33) to form an accommodating groove, and the steam pipe is arranged in the accommodating groove.

9. The superheated steam cooking device according to any one of claims 1 to 4, wherein: the inner container (1) is internally provided with a heating cavity (111) and a cooking cavity which are separated by a partition plate (11), and the partition plate (11) is provided with a through hole (110);

the heater (2) is arranged in the heating cavity (111), the steam channel (4) is arranged on the wall surface of the inner container (1) corresponding to the heating cavity (111), and the outlet of the steam channel (4) is communicated with the heating cavity (111).

10. The superheated steam cooking device according to claim 9, wherein: a fan (6) is also arranged in the heating cavity (111).

11. The superheated steam cooking device of claim 10, wherein: the heater (2) is a heating pipe which is arranged in an annular disc mode, and the heating pipe is arranged on the periphery of the fan (6) in a surrounding mode.