CN110710890A

CN110710890A - A heating element and cooking equipment for cooking equipment

Info

Publication number: CN110710890A
Application number: CN201911027252.2A
Authority: CN
Inventors: 王黎喆; 杨均; 曹骥
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2019-10-27
Filing date: 2019-10-27
Publication date: 2020-01-21
Anticipated expiration: 2039-10-27
Also published as: CN110710890B

Abstract

The invention relates to a heating assembly for cooking equipment and the cooking equipment, wherein the heating assembly for the cooking equipment comprises: mounting a plate; at least one heating tube disposed along a wall of the mounting plate and constrained to move only relative to the mounting plate; and the driving mechanism is used for driving the heating pipe to move back and forth along the mounting plate, and the power output end of the driving mechanism is in driving connection with the heating pipe. Compared with the prior art, the invention has the advantages that: according to the invention, the heating pipe is arranged on one side of the mounting plate and is limited to move relative to the mounting plate, so that the heating pipe can be flexibly adjusted according to different sizes and different positions of food, so that the food is heated in a centralized or dispersed manner, and the cooking effect is improved.

Description

A heating element and cooking equipment for cooking equipment

Technical Field

The invention belongs to the field of cooking equipment, and particularly relates to a heating assembly for cooking equipment and the cooking equipment.

Background

The baking cooking device (such as an oven) is an electric heating appliance for baking food by utilizing radiant heat emitted by an electric heating element, can be used for making food such as baked chicken, baked duck, baked bread, cakes and the like, and can be adjusted within the range of 50-250 ℃ generally according to different requirements of the baked food. In order to heat food, a heating assembly is usually disposed in a cooking device, and after a heating pipe in the cooking device is heated, heat radiation and heat conduction are performed through the high-temperature heating pipe, so that the food in the cooking device is heated.

Chinese utility model patent "a heating structure of baking cooking device" as applicant's prior application (its patent number is CN201821212163.6, and the publication number of granting is CN209018499U) discloses a heating structure of baking cooking device, including inner bag and the heating pipe of setting in the inner bag, the first end swing joint of heating pipe is on the installation position of the lateral wall of inner bag, and the second end passes through locating component detachably and fixes a position on the roof of inner bag, and above-mentioned second end can overturn from top to bottom for above-mentioned installation position after breaking away from above-mentioned locating component.

The heating tube in the above patent is an integral piece, and is integrally fixed in the inner container, and the heating area thereof cannot be adaptively adjusted according to the number and position of food in the inner container, so that the heating efficiency is low, and the situation of uneven heating may occur.

In order to solve the technical problem, as a chinese utility model patent "an oven" (with patent number CN201721919689.3 and publication number CN208625438U) previously applied by the applicant of the present invention, an oven is disclosed, which comprises an inner container, wherein an upper moving heating pipe is arranged at the upper part of the inner container, and a lower moving heating pipe is arranged at the lower part of the inner container; the upper moving heating pipe is connected with the first lifting driving mechanism and can move up and down under the driving of the first lifting driving mechanism, and the lower moving heating pipe is connected with the second lifting driving mechanism and can move up and down under the driving of the second lifting driving mechanism, so that the distance between the upper moving heating pipe and the lower moving heating pipe can be changed. The oven can freely change the distance between the upper moving heating pipe or the lower moving heating pipe and the baking tray according to the requirement, thereby ensuring that the baking effect of each layer of food is consistent when multiple layers of food are baked.

If chinese utility model patent "a baking cooking equipment" that applicant applied for earlier (patent number is CN201720391116.1, the publication number of authorizing is CN207444832U) discloses a baking cooking equipment again, including the box, be equipped with the baking inner chamber in the baking cooking equipment, be connected with a body group spare on the baking cooking equipment, baking inner chamber upper portion is equipped with the last heating pipe that heats the baking inner chamber, its characterized in that: the upper heating pipe comprises an upper left heating pipe arranged on the left side of the upper part of the baking inner cavity and an upper right heating pipe arranged on the right side of the upper part of the baking inner cavity, and the upper left heating pipe and the upper right heating pipe are both rotatably arranged on the upper part of the baking inner cavity. Baking cooking equipment in this patent is toasting the in-process, goes up left heating pipe and last right heating pipe and can carry out the adjustment of certain angle according to the radian of food, and both sides heating pipe forms an contained angle, and is close with the food radian, lets the heating pipe equal to every position distance of food, guarantees that the heating pipe is all the same to the different positions heat radiation of food, makes each position ripe simultaneously.

However, the heating tube in the above patent is arranged in the inner container, which occupies the space in the inner container and reduces the volume of the inner container for holding food.

Disclosure of Invention

The first technical problem to be solved by the present invention is to provide a heating assembly for a cooking apparatus, which can adjust a heating position to achieve the purpose of heating food specifically, in view of the above-mentioned prior art.

The second technical problem to be solved by the present invention is to provide a cooking apparatus which can achieve the purpose of concentrated and rapid heating of food while reducing the occupied space.

The technical scheme adopted by the invention for solving the first technical problem is as follows: a heating assembly for a cooking apparatus, comprising:

mounting a plate;

at least one heating tube disposed along a wall of the mounting plate and constrained to move only relative to the mounting plate;

and the driving mechanism is used for driving the heating pipe to move back and forth along the mounting plate, and the power output end of the driving mechanism is in driving connection with the heating pipe. The mounting plate can be in the form of a separately arranged plate or can be part of a wall plate of the inner container.

In order to realize the transmission connection of the driving mechanism and the heating pipe, the driving mechanism is in transmission connection with the heating pipe through a linkage piece.

Preferably, the linkage member is a screw rod extending along the movement direction of the heating pipe, the heating pipe is connected with a nut, the screw rod penetrates through the nut and is in threaded connection with the nut, the driving mechanism comprises a motor, and the power output end of the motor is in driving connection with the screw rod. Therefore, the screw rod is driven by the motor to rotate so as to drive the heating pipe to move.

In order to adjust the position of the heating pipe, one of the preferable modes is as follows: the screw rod have the screw thread of single direction of rotation, the heating pipe have two, every heating pipe corresponds to have a screw rod and a motor, correspondingly, the nut has two, and connect respectively on respectively corresponding heating pipe, arbitrary one heating pipe under the direct drive of respective motor another heating pipe sets up in opposite directions or back-to-back motion ground on the mounting panel.

In order to adjust the position of the heating pipe, the second preferred mode among them: the heating pipe has two, the nut has two, and coaxial setting to connect respectively on the heating pipe that corresponds respectively, the screw rod passes two nuts in proper order and makes two heating pipes linked mutually.

The two heating pipes can move in the same direction under the action of the screw rod so as to adjust the position of the whole heating assembly, and the two heating pipes can also move in the opposite direction or in the opposite direction under the action of the screw rod so as to adjust the size of the heating area and the position of the heating pipes.

In order to reflect the heat emitted by the heating pipe, the side surface of the mounting plate corresponding to the heating pipe is a reflecting surface capable of reflecting the heat.

In order to realize that the heating pipe is limited to move only relative to the mounting plate, the mounting plate is provided with a limiting part, and the heating pipe is provided with a part matched with the limiting part, so that the heating pipe can only translate relative to the mounting plate without rotating.

The sliding connection between the heating pipe and the mounting plate is realized, the limiting part and the part matched with the limiting part can adopt various forms, wherein a guide rail and guide strip matching structure matched with the limiting part in a sliding fit can be adopted, a sliding groove can also be formed in the mounting plate, and the heating pipe is partially inserted into the sliding groove and slides relative to the mounting plate. Therefore, the sliding groove serves as a limiting part on the mounting plate, the terminal can be used as a terminal of an electric plug connected with a power supply, and can also be used as a part matched with the limiting part, and the sliding groove is multipurpose and enables the structure to be more compact and reasonable.

The two heating pipes are provided, the two ends of the main pipe section of each heating pipe are respectively provided with the extension sections parallel to the sliding grooves, the two extension sections in each heating pipe are bent and extended in the same direction and are opposite to the extension direction of the extension section of the other heating pipe, at least parts of the main pipe sections of the heating pipes are arranged side by side, and the extension sections of the two heating pipes are arranged in a staggered and spaced mode when the two heating pipes are located at the nearest position. Therefore, when the food needs to be quickly cooked, and the two heating pipes are located at the nearest positions, the two heating pipes are arranged in a staggered mode and matched with each other, so that the food is heated intensively.

The technical scheme adopted by the invention for solving the second technical problem is as follows: a cooking device with above-mentioned heating element, characterized in that: the heating assembly is arranged on the outer side of the inner container, the mounting plate in the heating assembly and the wall plate on the corresponding side of the inner container are arranged side by side, and the heating pipe in the heating pipe assembly is located between the mounting plate on the corresponding side and the wall plate of the inner container.

In order to improve the heating efficiency, the heating assemblies are at least two groups, and each group of heating assemblies is respectively arranged on the outer side of the corresponding wall plate of the inner container. Therefore, the cooking effect can be improved by adjusting each heating component according to the actual cooking requirement.

Compared with the prior art, the heating pipe is arranged on one side of the mounting plate and is limited to move relative to the mounting plate, so that the heating pipe can be flexibly adjusted according to different sizes and different positions of food, the food is heated in a centralized or dispersed manner, and the cooking effect is improved; the mounting plate not only has a limiting effect on the heating pipe, but also can reflect heat emitted by the heating pipe, thereby achieving the effects of energy conservation and high efficiency; in addition, the heating area can be freely changed by the relative movement of the two heating pipes according to the actual requirement, and the extending sections of the two heating pipes are staggered and arranged at intervals when the two heating pipes are moved to the nearest position, so that the food is heated intensively, and the power density per unit area is increased to cook the food quickly; the two heating pipes move to the farthest position to realize the concentrated heating of different positions of food, which is beneficial to the uniformity of food heating. The flattening design of the invention ensures that even if the cooking device is arranged in the inner container of the cooking device, the occupied space of the inner container is small, and the occupied space of food in the inner container is not influenced.

Drawings

FIG. 1 is a schematic structural diagram according to a first embodiment of the present invention;

FIG. 2 is a schematic view of a portion of the structure of FIG. 1;

FIG. 3 is a cross-sectional view of FIG. 1;

FIG. 4 is a schematic structural diagram of a heating element according to a first embodiment of the present invention;

FIG. 5 is a schematic structural view of a heating assembly according to the first embodiment in which two heating tubes are located at the farthest positions;

FIG. 6 is a cross-sectional view of a portion of the structure of FIG. 4;

FIG. 7 is an enlarged view of portion A of FIG. 6;

FIG. 8 is a schematic perspective exploded view of a portion of the structure of FIG. 5;

FIG. 9 is a schematic structural diagram according to a second embodiment of the present invention;

FIG. 10 is a schematic view of a portion of the structure of FIG. 9;

FIG. 11 is a schematic structural diagram of a third embodiment of the present invention;

FIG. 12 is a schematic view of the structure of FIG. 11 at another angle;

FIG. 13 is a schematic view of the structure of FIG. 12 at another angle;

FIG. 14 is a cross-sectional view of FIG. 13;

FIG. 15 is a schematic view of the connection between the heating assembly and the drive mechanism of FIG. 13;

FIG. 16 is a schematic view of a portion of the structure of FIG. 15 (with the heating area at a minimum);

fig. 17 is a schematic perspective exploded view of a heating element according to a third embodiment;

FIG. 18 is a schematic structural view according to a fourth embodiment;

FIG. 19 is a cross-sectional view of FIG. 18;

FIG. 20 is a schematic view showing a connecting structure of a heating unit and a driving mechanism according to a fourth embodiment;

FIG. 21 is a schematic view of the structure of FIG. 20 from another angle;

FIG. 22 is a schematic view of a portion of the structure of FIG. 20;

fig. 23 is an enlarged schematic view of a portion a in fig. 22.

Detailed Description

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

The first embodiment is as follows:

as shown in fig. 1 to 8, a first preferred embodiment of the present invention is shown. The cooking device of this embodiment is an oven, and includes an inner container 1, a heating assembly 2, a driving mechanism 3, and a hot air blower 5.

As shown in fig. 1 to 3, the inner container 1 has a chamber 100 therein, and a front side of the chamber 100 is open; a rear baffle 12 is arranged in the inner chamber 100 of the inner container 1, the rear baffle 12 is positioned in front of the rear wall plate 11 of the inner container 1, and a hot air chamber 101 which is in fluid communication with the inner chamber 100 of the inner container 1 is formed between the rear wall plate 11 of the inner container 1, an air heater 5 which is used for providing power for the air flow exchange between the inner chamber 100 of the inner container 1 and the hot air chamber 101 is arranged on the rear wall plate 11 of the inner container 1, and an air inlet 121 corresponding to the air heater 5 and an air outlet 122 which is in fluid communication with the air inlet 121 are arranged on the rear baffle 12. During operation, air heater 5 produces a centrifugal action through rotatory inside air to inner bag 1 for inside air passes through after 5 interior heating pipes of air heater heat, from the air outlet 122 air-out of backplate 12, when inside air reaches the door body of the uncovered department of cavity 100 front side, after the inner bag internal formation circulation, from the air inlet 121 air inlet in the middle of backplate 12, realize the inner loop in 1 cavity 100 of inner bag, thereby play the effect of guaranteeing temperature field homogeneity and convection heating food.

As shown in fig. 2 and fig. 3, the heating assemblies 2 are disposed outside the inner container 1, and there are three groups of heating assemblies 2, two groups of heating assemblies 2 are disposed on the left side of the left wall plate of the inner container 1 and the right side of the right wall plate of the inner container 1, respectively, and the other group of heating assemblies 2 is disposed above the inner container 1. The heating assembly 2 for a cooking apparatus includes a mounting plate 23, at least one heating tube 21, and a driving mechanism 3, in this embodiment, there are two heating tubes 21, and the two heating tubes 21 are disposed along a wall surface of the mounting plate 23 and are limited to move only relative to the mounting plate 23; the mounting panel 23 is arranged side by side with the wallboard that corresponds the side of inner bag 1, heating pipe 21 in heating element 2 is located between the corresponding lateral wall board of mounting panel 23 and inner bag 1, in addition, the side that corresponds with heating pipe 21 in the mounting panel 23 is the plane of reflection 230 that can the heat of reflection, plane of reflection 230 can the surface silvering, reflective film such as platinization, so, the plane of reflection 230 of mounting panel 23 can be with the heat of heating pipe transmission to the 1 direction reflection of inner bag, thereby heat the food in the inner bag 1, the thermal utilization ratio has been increased. In this embodiment, the heating assemblies 2 have three sets, wherein two sets of heating assemblies 2 are respectively disposed on the left side of the left wall plate of the inner container 1 and the right side of the right wall plate of the inner container 1, and the other set of heating assemblies 2 is disposed above the inner container 1, as shown in fig. 3.

As shown in fig. 4 and 5, the driving mechanism 3 includes a motor 31, one motor 31 is disposed corresponding to each heating pipe 21, the motor 31 is in transmission connection with the respective heating pipe 21 through a linkage member, the linkage member is a screw rod 36 extending along the moving direction of the heating pipe 21, the screw rod 36 has a thread with a single rotating direction, each heating pipe 21 is connected with a nut 214, the screw rod 36 passes through the corresponding nut 214 and is in threaded connection with the corresponding nut 214, the power output end of the motor 31 is in driving connection with the corresponding screw rod 36, thus, in each group of heating assemblies: any one of the heating tubes 21 is arranged on the corresponding mounting plate 23 so as to be movable toward and away from the other heating tube 21 by direct drive of the respective motor 31.

As shown in fig. 6 to 8, each heating tube 21 includes at least one heating unit, and in this embodiment, each heating tube 21 includes two heating units connected to each other, and the two heating units are connected by a connecting rod 25. In this embodiment, one of the heating units of each heating pipe 21 is located inside the other heating unit, each heating unit includes a main pipe section 211 and an extension section 212 extending from two ends of the main pipe section 211 along a plane of the mounting plate 23 to be bent toward the same side, an extending direction of the extension section 212 is consistent with a moving direction of the heating pipe 21, and the connecting rod 25 extends along an axial direction of the main pipe section 211 and intersects with the extension section 212; the two extension sections 212 of each heating pipe 21 extend in the same direction, the extension directions of the extension sections 212 of the two heating pipes 21 in each group of heating assemblies are opposite, the main pipe sections 211 of the heating pipes 21 in each group of heating assemblies are oppositely arranged, and the extension sections 212 of the two heating pipes 21 in each group of heating assemblies are staggered and arranged at intervals when the two heating pipes 21 in each group of heating assemblies move to the nearest position in opposite directions; in this embodiment, for the heating elements located on the right side of the liner, the extension section 212 of the heating tube 21 located on the upper portion extends downward, and the extension section 212 of the heating tube 21 located on the lower portion extends upward, so that the extension directions of the extension sections of the two heating tubes are opposite, and both extend along the up-and-down moving direction of the heating tube 21, and when the two heating tubes 21 move to the nearest position in opposite directions, the heating area enclosed by the two heating tubes 21 is the smallest; as shown in fig. 4, the heating area formed by the two heating pipes is in a state between the maximum area and the minimum area, so that the extension sections 212 of the two heating pipes 21 are staggered and spaced from each other, so that the two heating pipes 21 are staggered with each other, thereby performing concentrated heating on the food; as shown in fig. 5, in the state that the two heating pipes 21 are moved away from each other to the farthest position, the two heating pipes 21 are spread apart from each other, which is beneficial to uniformity of heating food.

The mounting plate 23 of each heating assembly has a position-limiting portion, and the heating tube 21 has a portion matching with the position-limiting portion, so that the heating tube 21 can only translate relative to the mounting plate 23 without rotating. In this embodiment, the limiting portion is a sliding slot 231 formed on the mounting plate 23, the sliding slot 231 extends along the moving direction of the heating pipe, correspondingly, the end of the extending section 212 of each heating pipe 21 has a terminal 213 for connecting with an electrical plug of a power supply, and the terminal 213 at least partially passes through the corresponding sliding slot 231 and is slidably limited in the corresponding sliding slot 231. The chutes 231 of the mounting plate 23 extend vertically for the heating elements located on the left and right sides of the inner container, and the chutes on the mounting plate 23 of the heating elements above the inner container extend in the front-rear direction.

In order to make the sliding between one of the heating pipes and the mounting plate smoother, a first guide groove 233 and a first guide bar 251 which are in sliding fit are arranged between the mounting plate 23 and the heating unit of one of the heating pipes 21, and two groups of the first guide groove 233 and the first guide bar 251 are arranged at intervals along the direction perpendicular to the sliding groove 231 and are respectively arranged at two opposite sides of the heating unit; the following takes one set of the first guide groove and the first guide strip as an example:

the extending direction of the first guide groove 233 is the same as the extending direction of the slide groove 231, and the first guide groove 233 and the slide groove 231 are arranged at intervals; the first guide strip 251 is disposed on the side surface of the connecting rod 25 facing the mounting plate 23, the cross section of the first guide strip 251 is inverted T-shaped, correspondingly, the mounting plate 23 is provided with a first guide rod 232, the first guide rod 232 is provided with a first guide groove 233, the cross section of the first guide groove 233 is also inverted T-shaped, the first guide strip 251 is inserted into the first guide groove 233 and is limited in the first guide groove 233 in a sliding manner, specifically, see fig. 7, so as to better realize the sliding connection between the heating pipe and the mounting plate. The first guide bar 251 described above may also be provided on the mounting plate 23, and the first guide groove 233 may be provided on the connecting rod 25 of the heating unit of another heating tube.

In order to make the relative sliding between the two heating pipes 21 smoother, a second guide bar 22 and a second guide groove 241 which are matched with each other in a sliding manner are arranged between the heating units of the two heating pipes 21, the extending direction of the second guide bar 22 is consistent with the extending direction of the sliding groove 231, the second guide bar 22 is arranged on the extending section 212 of one of the heating pipes 21, the cross sections of the second guide bars 22 are all in an inverted T shape, a second guide rod 24 is arranged on the extending section 212 of the other heating pipe 21, the second guide rod 24 is provided with a second guide groove 241 extending along the axial direction, the cross section of the second guide groove 241 is also in an inverted T shape, and the second guide bar 22 is inserted into the second guide groove 241 and is limited in the second guide groove 241 in a sliding manner, which is specifically shown in fig. 3. In this embodiment, the sliding grooves 231, the first guide grooves 233, the second guide grooves 241, the first guide strips 251, and the second guide strips 22 all extend in the same direction, as shown in fig. 7 and 8.

The heating assembly of the embodiment can be used in various cooking devices, such as an oven, a steam box and various combined all-in-one machines (such as a steaming and baking all-in-one machine and a steaming and baking micro all-in-one machine), wherein the heating assembly can be arranged outside the inner container, the occupied space is small, and the volume of the inner container is not reduced.

Example two:

as shown in fig. 9 and 10, a second embodiment of the present invention is shown.

The structure and the like of the main pipe section 211a and the extension section 212a in the heating pipe 21a in this embodiment are the same as those in the first embodiment, the end of the extension section 212a of the heating pipe has a terminal 213a, and the mounting plate 23a has a sliding groove 231 a.

The present embodiment is different from the first embodiment only in that: two heating pipes 21a are linked, only one set of driving mechanism 3a is provided corresponding to each set of heating components 2a, and only one motor 31a is provided corresponding to each set of heating components 2a, as shown in fig. 9, the power output end of the driving mechanism 3a is simultaneously connected with the two heating pipes 21a, the two heating pipes 21a are linked, specifically, the two heating pipes 21a are respectively provided with a nut 214a, the two nuts 214a are coaxially arranged, a screw 36a is sequentially provided with a first threaded part 361a and a second threaded part 362a along the axial direction thereof, the thread rotation directions of the first threaded part 361a are opposite, the first threaded part 361a penetrates through one nut 214a and the two nuts are in thread fit, the second threaded part 362a penetrates the other nut 214a and the two nuts are in thread fit, thus, the screw 36a sequentially penetrates the two nuts 214a to link the two heating pipes 21a, and the two heating pipes 21a can move towards or away from each other relative to the mounting plate 23, the two heating pipes 21a can be moved towards each other to the closest position, in which the two heating pipes 21a are in the closest position, as shown in detail in fig. 10. The arrangement positions of the heating element and the inner container in this embodiment are the same as those in the first embodiment, and detailed description thereof will not be repeated.

Example three:

as shown in fig. 11 to 17, a third embodiment of the present invention is shown.

This embodiment differs from the first embodiment only in that:

1. two groups of heating components 2b are arranged and are respectively and oppositely arranged at the outer sides of the left side wall plate and the right side wall plate of the inner container 1 b. The two heating pipes 21b in the heating assembly 2b are respectively arranged at the upper part and the lower part of the corresponding mounting plate 23b, the sliding chutes 231b on the mounting plate 23b extend up and down, the main pipe sections 211b of the two heating pipes 21b extend back and forth, the extension section 212b of the heating pipe 21b at the upper part extends downwards, and the extension section 212b of the heating pipe 21b at the lower part extends upwards; the two heating pipes 21b are driven by the corresponding driving mechanism 3b to move up and down.

Further, an upper fixed heating pipe 7 is provided above the chamber 100b, and a lower fixed heating pipe 8 is provided below the chamber 100 b.

In each group of heating assemblies 2 b: the driving mechanism 3 drives at least one of the heating tubes 21b to move the heating tube 21b toward or away from the other heating tube 21 b. The power output end of the driving mechanism 3b is in driving connection with the screw 36b, so that the heating pipe 21b moves upwards or downwards under the action of the screw 36 b. The screw 36b in this embodiment includes a first screw 361b and a second screw 362b spaced apart from and alongside the first screw 361b, the first screw 361b and the second screw 362b being spaced apart from each other in the front-rear direction, as shown in fig. 15 to 16, the first screw 361b has a first thread portion 371 and a second thread portion 372 in opposite thread rotation directions in order from top to bottom along the axial direction thereof, the first screw 361b corresponds to the two nuts 214b, as shown in fig. 15 and 16, two nuts 214b are coaxially arranged and respectively connected to the front extensions 212b of the respective heating pipes 21b, a first threaded portion 371 passes through one of the nuts 214b and is threadedly engaged therewith, a second threaded portion 372 passes through the other nut 214b and is threadedly engaged therewith, the two heating pipes 21b are linked by the first screw 361b, and the two heating pipes 21b move towards or away from each other under the action of the first screw 361 b. The second screw 362b has a single-direction-of-rotation thread, the second screw 362b corresponds to a nut 214b, the nut 214b is connected to the extension 212b at the rear side of one of the heating pipes 21b (which is the second heating pipe 21b "), the second screw 362b passes through the nut 214b and is in threaded engagement with the nut 214b, so that the heating pipe 21b moves downward or upward relative to the other heating pipe 21b under the action of the second screw 362b, and in particular, as shown in fig. 16 to 19, each group of heating units 21b corresponds to a first screw 361b and a second screw 362 b.

2. The drive mechanism 3b is different:

as shown in fig. 15 and 16, each screw is provided with a clutch 4b correspondingly;

for each group of heating elements 2 b: the two power output ends of the driving mechanism 3b are selectively connected with the first screw 361b and the second screw 362b on the corresponding side through the corresponding clutch 4b, the clutch 4b is an electromagnetic clutch with a stator plate 41b and a rotor plate 42b which are electromagnetically attracted, and the clutch 4b is used for connecting or disconnecting the power output end of the driving mechanism and the screw on the corresponding side.

As shown in fig. 11 to 16, the driving mechanism 3b includes a motor 31b, an intermediate transmission assembly 32, and a transmission mechanism 33. Two groups of transmission mechanisms 33 are uniformly arranged corresponding to each group of heating assemblies, the two groups of transmission mechanisms 33 are arranged at intervals from front to back, so that the transmission mechanisms 33 are four groups corresponding to the two groups of heating assemblies arranged from left to right, the transmission mechanisms of the left and right heating assemblies have the same structure, the middle transmission assembly 32 is provided with four power output ends, and the driving mechanism can be linked with the four groups of transmission mechanisms 33 through the middle transmission assembly.

As shown in fig. 12, a mounting base 30 is provided above the inner container 1b, the motor 31b is provided on the mounting base 30, and an output shaft of the motor 31b extends in the left-right direction; the middle transmission component 32 is arranged above the inner container 1b, the power input end of the middle transmission component 32 is in driving connection with the output shaft of the motor 31b, and for the heating component on the left side, two power output ends of the middle transmission component 32 are provided; specifically, as shown in fig. 15, the intermediate transmission assembly 32 includes a driving gear 321, a first connecting rod 322, a bevel gear set 323 and a second connecting rod 324, wherein the driving gear 321 is fixedly inserted into the output shaft of the motor 31 b; the first connecting rod 322 is arranged above the inner container 1b and is consistent with the extending direction of the output shaft of the motor 31 b; a first transmission gear 3221 engaged with the driving gear 321 is fixedly penetrated through the first link 322, and first conical gears 3222 are fixedly penetrated through both end portions of the first link 322; two groups of bevel gear sets 323 are arranged at intervals left and right, each of the two groups of bevel gear sets 323 comprises a second bevel gear 3231 and a third bevel gear 3232 which are coaxially arranged in front and behind and synchronously rotate around the axes of the bevel gear sets, wherein the second bevel gear 3231 is meshed with the first bevel gear 3222 on the corresponding side, and the teeth of the second bevel gear 3231 and the teeth of the third bevel gear 3232 in each group of bevel gear sets 323 are arranged in a manner of being opposite to each other; the second connecting rods 324 extend in the front-rear direction and are disposed above the liner 1b, two second connecting rods 324 are disposed at left and right intervals, a fifth bevel gear 3241 engaged with the first bevel gear 3222 on the corresponding side is fixedly inserted into a rear end portion of each second connecting rod 324, and a sixth bevel gear 3242 is fixedly inserted into a front end portion of each second connecting rod 324, as shown in fig. 15 to 16.

Two sets of transmission mechanisms 33 which are arranged at intervals are arranged in front and back of each set of heating component, the transmission mechanisms of the two sets of heating components are the same, and the left heating component 2b is taken as an example below.

As shown in fig. 15 and 16, each of the two sets of transmission mechanisms 33 includes a vertical rod 331, a seventh bevel gear 3311 is fixed to an upper end of the vertical rod 331, wherein the seventh bevel gear 3311 of the vertical rod 331 located in front is engaged with a sixth bevel gear 3242, a stator plate 41b of the electromagnetic clutch is arranged at a lower end of the vertical rod 331, and a rotor plate 42b of the electromagnetic clutch is arranged at an upper end of the first screw 361b, so that the two can be electromagnetically attracted; the seventh bevel gear 3311 of the vertical rod 331 located at the rear is engaged with the third bevel gear 3232, a stator plate 41b of the electromagnetic clutch is provided at the lower end of the vertical rod 331, and a rotor plate 42b of the electromagnetic clutch is provided at the upper end of the second screw 362b, so that the two can be electromagnetically engaged. In this way, corresponding to each group of heating assemblies, the intermediate transmission assembly 32 has two power output ends, the power input ends of the two groups of transmission mechanisms 33 are respectively in transmission connection with the two power output ends of the intermediate transmission assembly 32, the power output ends of the two groups of transmission mechanisms 33 are provided with the static pieces 41b of the electromagnetic clutch, the first screw 361b and the second screw 362b are both provided with the movable pieces 42b, in addition, the power output ends of the two groups of transmission mechanisms 33 can be provided with one of the static pieces 41b and the movable pieces 42b, correspondingly, the first screw 361b and the second screw 362b can be provided with the other of the static pieces 41b and the movable pieces 42b, as long as the power output ends of the driving mechanisms 3 can be connected with or disconnected from the screws on the corresponding sides.

3. Specifically, as shown in fig. 11 to 14, a rear baffle 12b is disposed in the internal cavity 100b of the inner container 1b, the rear baffle 12b is located in front of the rear wall 11b of the inner container, and a hot air chamber 101b in fluid communication with the inner container cavity 100b is formed between the rear wall 11b of the inner container 1b, a hot air blower 5b for providing power for exchanging air flow between the internal cavity 100b of the inner container 1b and the hot air chamber 101b is disposed on the rear wall 11b of the inner container 1b, the interior of the hot air chamber 101b is divided into an upper hot air chamber 131 and a lower hot air chamber 132 by a transverse partition 130, the hot air blower 5b includes a first hot air blower 51b disposed at a position corresponding to the upper hot air chamber 131 on the rear wall 11b and a second hot air blower 52b disposed at a position corresponding to the lower hot air chamber 132 on the rear wall 11b, and, as shown in fig. 2, the rear baffle 12b is provided with a first air inlet 121b corresponding to the first hot air blower 51b and a second air inlet 122b b, the rear baffle 12b further defines a first air outlet 123b in fluid communication with the first air inlet 121b and a second air outlet 124b in fluid communication with the second air inlet 122b, as shown in fig. 15 and 16. The two hot air blowers can increase the air volume in the inner container, and after the interior of the hot air chamber 101b is divided into an upper hot air chamber 131 and a lower hot air chamber 132 by the transverse partition plate 130, as shown in fig. 16, the air flow in the upper and lower hot air chambers can be fully isolated, thereby effectively reducing the momentum loss and improving the efficiency of the blower system; in last hot-blast room or lower hot-blast room, in operation, air heater 5b produces a centrifugal action through rotatory to the inside air of inner bag, make inside air pass through the heating pipe heating back in the hot-blast built-in, the air outlet of the hot-blast room of correspondence from the backplate carries out the air-out, when air reaches the door body of the uncovered department of cavity 100b front side in the inner bag, form the circulation back in the inner bag, the air inlet air of the corresponding cavity of backplate, inside the inner bag corresponding the upper and lower position of hot-blast room all forms the inner loop, thereby play the effect of guaranteeing temperature field homogeneity and convection heating food. In addition, the upper fixed heating pipe 7, the lower fixed heating pipe 8, the left and right groups of heating components 2b and the air heater 5b can realize five-surface heating of the inner container, and the baking effect is good. The two heating tubes 21b in the heating assembly 2b are respectively a first heating tube 21 b' and a second heating tube 21b ", in this embodiment, the heating assembly 2b on the right side: the first heating pipe 21 b' is positioned at the upper portion of the mounting plate 23b, and the second heating pipe 21b ″ is positioned at the lower portion of the mounting plate 23 b; heating element 2b on the left side: the first heating pipe 21 b' is located at the lower portion of the mounting plate 23b, the second heating pipe 21b "is located at the upper portion of the mounting plate 23b, and the second screw 362b is threadedly coupled to the nut 214b of the second heating pipe 21 b". As shown in fig. 15, in a state that the two heating pipes 21b in each group of heating assemblies 2b are moved to the nearest position, the extension sections 212b of the two heating pipes 21b in each group of heating assemblies 2b are staggered and arranged at intervals, specifically, refer to the two heating pipes on the left side in fig. 15; in a state where the two heating pipes 21b in each group of heating assemblies 2b are moved back to the farthest position, the heating area is the largest, specifically referring to the right heating assembly 2b in fig. 16.

In the above embodiment, as shown in fig. 15 to 16, the ends of the extension sections 212b in the two groups of heating assemblies 2b are provided with terminals 213b for connecting with the electrical plug of the power supply, and the first heating tube 21 b' and the second heating tube 21b ″ are provided with at least two connecting rods 25b arranged up and down at intervals; at least a part of the terminals 213b of the first heating pipe 21b ' are located between two adjacent connecting rods 25b of the second heating pipe 21b ″, the two connecting rods 25b are respectively an upper connecting rod 25b ' and a lower connecting rod 25b ″, the mounting plate 23b is provided with a sliding slot 231b extending vertically, the terminals 213b of each group of heating assemblies 2 can penetrate through the corresponding sliding slot 231b to be limited in the corresponding sliding slot 231b, so as to realize the relative sliding between the heating pipe 21b and the corresponding mounting plate 23b, and in addition, in the present embodiment, the distance between the two adjacent connecting rods 25b is smaller than the length of the sliding slot 231b corresponding to the terminal of the first heating pipe 21b '.

In the left heating block 2 b: when the first heating pipe 21b ' and the second heating pipe 21b ″ move oppositely to a state where the terminal 213b of the first heating pipe 21b ' abuts against the upper connecting rod 25b ' of the second heating pipe 21b ″, at this time, the heating area surrounded by the heating assembly 2b is the smallest, specifically, referring to the heating assembly on the left side shown in fig. 15 and 16, when the second heating pipe 21b ″ moves downwards, the upper connecting rod 25b ' of the second heating pipe 21b ″ can push the first heating pipe 21b ' to continue moving downwards, at this time, the two heating pipes 21b in the left heating assembly can integrally move to the lowest position state to heat the food at the lower part in the chamber 100b, and at this time, the second air heater 52b in the lower hot air chamber 132 can be controlled to operate to make the temperature field uniformity of the lower region of the inner container chamber better; as shown in fig. 15 to 16, in the right heating block 2 b: the first heating pipe 21b ' and the second heating pipe 21b ″ move oppositely to a state where the terminal 213b of the first heating pipe 21b ' abuts against the lower connecting rod 25b ″ of the second heating pipe 21b ″, at this time, the heating area surrounded by the heating assembly 2 is the smallest, when the second heating pipe 21b ″ continues to move upwards, the lower connecting rod 25b ″ of the second heating pipe 21b ″ can push the first heating pipe 21b ' to continue to move upwards, specifically, referring to the right heating pipe assembly shown in fig. 16, at this time, the two heating pipes 21b of the right heating assembly 2b can integrally move to the highest position state, and heat the food at the upper part in the inner container chamber 100b, at this time, the first air heater 51b in the upper hot air chamber 131 can be controlled to work, so that the temperature field uniformity of the upper area of the inner container chamber 100b is better.

Example four:

as shown in fig. 18 to 23, a fourth embodiment of the present invention is provided.

The present embodiment is different from the third embodiment in that:

1. the heating assembly has four groups:

as shown in fig. 18 to 21, two groups of the inner container are respectively located at the outer sides of the left and right side wall plates of the inner container, one group is located above the top wall plate of the inner container, and the other group is located below the bottom wall plate of the inner container. Wherein, the top of inner bag 1c top wallboard and the below of inner bag 1c bottom wallboard are provided with a set of first heating element 2 c' respectively, and the left side of inner bag 1c left wallboard and the right side of inner bag 1c right wallboard are provided with a set of second heating element 2c respectively, and air heater 5c sets up on inner bag rear wall board 11c, so, can heat inner bag left and right, upper and lower and back wallboard, has realized the stoving heating to 5 faces of inner bag 1c promptly.

As shown in fig. 19 and 20, the mounting plate 23c includes a first mounting plate 23c 'and a second mounting plate 24c, and specifically, in the first heating block 2 c': the first heating assembly 2c ' includes a first mounting plate 23c ' parallel to the inner container wall plate, the first mounting plate 23c ' is located at the outer side of the corresponding inner container top wall plate or bottom wall plate, two heating pipes 21c in the first heating assembly 2c ' are arranged in front and back and located between the corresponding side first mounting plate 23c ' and the inner container wall plate, correspondingly, the sliding slots 231c of the first mounting plate 23c ' extend in front and back, and the terminals 213c of the heating pipes 21c in the first heating assembly 2c ' at least partially penetrate the corresponding sliding slots 231c to be slidably limited in the corresponding sliding slots 231c, as shown in fig. 19 and 20; further, in the first heating assembly 2 c': the main tube section 211c of the heating tube 21c extends left and right, the extension section 212c of the heating tube 21c located at the front extends rearward, and the extension section 212c of the heating tube 21c located at the rear extends forward.

In the second heating assembly 2c ″: the second heating assembly 2c ″ includes a second mounting plate 24c parallel to the left wall plate or the right wall plate of the liner, two heating tubes 21c in the second heating assembly 2c ″ are arranged up and down and located between the second mounting plate 24c and the liner wall plate on the corresponding side, correspondingly, the sliding grooves 231c of the second mounting plate 24c extend back and forth, and the terminals 213c of the heating tubes 21c in the second heating assembly 2c ″ at least partially penetrate the corresponding sliding grooves 231c to be slidably limited in the sliding grooves 231c on the corresponding second mounting plate, as shown in fig. 19 and 20. Further, in the second heating assembly 2c ″: the main tube section 211c of the heating tube 21c extends forward and backward, the extension section 212c of the upper heating tube 21c extends downward, and the extension section 212c of the lower heating tube 21c extends upward.

The two heating pipes 21c in each group of heating assemblies are linked through a screw rod 36c, the link is the screw rod 36c extending along the moving direction of the heating pipe 21c, the screw rod 36c sequentially has a first threaded part 361c and a second threaded part 362c with opposite thread rotating directions along the axial direction, specifically, as shown in fig. 23, a nut 214c is arranged on each heating pipe 21c, the two nuts 214c in each group of heating assemblies are coaxially arranged, the first threaded part 361c passes through one nut 214c and is in thread fit with the nut 214c, and the second threaded part 362c passes through the other nut 214c and is in thread fit with the nut 214 c; in this way, the two heating pipes 21c in each group of heating assemblies move towards or away from each other under the action of the corresponding screw. The screw rod in the first heating assembly 2c ' is a first screw rod 36c ', and extends in the front-back direction, two heating pipes 21c in the first heating assembly 2c ' are arranged on the first mounting plate 23c ' in a front-back sliding manner under the action of the first screw rod 36c ', and two heating pipes 21c in the first heating assembly 2c ' positioned above are positioned between the first mounting plate 23c ' at the top and the top wall plate of the liner; the screw rod in the second heating assembly 2c ″ is a second screw rod 36c ″ and is vertically arranged, the two heating pipes 21c in the second heating assembly 2c ″ are vertically arranged and are vertically and slidably arranged on the second mounting plate 24c under the action of the second screw rod 36c ″, and the two heating pipes 21c in the second heating assembly 2c ″ on the right side are located between the second mounting plate 24c on the right side and the right wall plate of the liner.

2. The drive mechanism 3c is different:

in this embodiment, the screw of each group of heating assemblies 2c is provided with a corresponding clutch 4c, the clutches 4c are arranged on the outer side of the inner container, and as shown in fig. 20 to 22, there are four clutches 4 c; the driving mechanisms 3c are arranged on the outer side of the inner container 1c, the number of power output ends of the driving mechanisms 3c is four, and each power output end is selectively connected with the screw rod on the corresponding side in a driving mode through the corresponding clutch 4 c. The clutch 4c is an electromagnetic clutch having a stator plate 41c and a rotor plate 42c which are magnetically attracted, and the clutch 4c is used for connecting or disconnecting the screw rod on the corresponding side and the power output end of the driving mechanism 3 c.

As shown in fig. 20 and 22, the driving mechanism 3c includes a motor 31c, a driving gear 32c, a first link 33c, a first transmission mechanism 34, and a second transmission mechanism 35; the motor 31c is disposed on the mounting seat above the inner container 1c, an output shaft of the motor 31c extends in the left-right direction, and the driving gear 32c is fixedly inserted into the output shaft of the motor 31c, as shown in fig. 1 to 3. A first connecting rod 33c is arranged on the connecting seat above the inner container 1c in a left-right extending manner, and a first transmission gear 331c meshed with the driving gear 32c is fixedly penetrated on the first connecting rod 33 c; and a first bevel gear 332 is fixedly inserted into both ends of the first link 33 c.

Each group of first heating assemblies 2 c' is correspondingly provided with a group of first transmission mechanisms 34, two groups of first transmission mechanisms 34 are arranged, and the first transmission mechanisms 34 of the two groups are arranged at left and right intervals; the power input ends of the two groups of first transmission mechanisms 34 are respectively in transmission connection with the first bevel gears 332 at the corresponding ends of the first connecting rods 33c, the power output end of the first transmission mechanism 34 is provided with one of the stator plates 41c and the rotor plates 42c of the clutch, and the first screw rod 36c 'at the corresponding side is provided with the other one of the stator plates 41c and the rotor plates 42c, so that the power output ends of the groups of first transmission mechanisms 34 are connected with the first screw rod 36 c' at the corresponding side through magnetic attraction of the stator plates and the rotor plates.

The following takes as an example a first transmission mechanism for driving two heating pipes in the first heating assembly 2 c' located below the inner container to move back and forth:

as shown in fig. 20 to 22, the first transmission mechanism 34 includes a tapered tooth group 342, a worm 343, and a second link 345. As shown in fig. 4 and 6, the set of tapered teeth 342 includes a second tapered tooth 3421 and a third tapered tooth 3422 which are coaxially arranged in front of and behind each other and synchronously rotate around their axes, wherein the second tapered tooth 3421 is engaged with the first tapered gear 332, and the teeth of the second tapered tooth 3421 and the teeth of the third tapered tooth 3422 in the set of tapered teeth 342 are arranged away from each other; the worm 343 is vertically arranged at the right rear side of the liner, and the upper end part of the worm 343 is provided with a fourth conical tooth 3431 meshed with the third conical tooth 3422; the second connecting rod 345 extends back and forth, can rotate around the axis of the second connecting rod, and is positioned behind the first screw rod 36c 'on the corresponding side, the front end of the second connecting rod 345 is provided with a static piece 41c, correspondingly, the rear end of the first screw rod 36 c' is provided with a movable piece 42c which can be electromagnetically attracted with the static piece 41c, as shown in fig. 20 specifically; a worm gear 3451 is fixedly arranged at the rear end of the second connecting rod 345, and the lower part of the worm 343 is in meshing transmission with the worm gear 3451 through a transmission gear; the transmission gears include a first transmission gear 344 meshed with the lower part of the worm 343 and a second transmission gear 346 meshed with the first transmission gear 344, the second transmission gear 346 is meshed with the worm wheel 3451, and thus, the worm 343 is meshed with the worm wheel 3451 through the first transmission gear 344 and the second transmission gear 346 in sequence; in addition, three connecting seats 347 are arranged on the inner wall of the oven shell bottom plate, and the worm gear 3451, the first transmission gear 344 and the second transmission gear 346 are rotatably arranged on the respective connecting seats 347, which is particularly shown in fig. 18; and the worm gear 3451 is in transmission connection with the worm 343 via the second transmission gear 346 and the first transmission gear 344 in sequence.

Each group of second heating assemblies 2c ″ is correspondingly provided with a group of second transmission mechanisms 35c, the number of the second transmission mechanisms 35c is two, and the two groups of second transmission mechanisms 35 are arranged at left and right intervals. The power input end of each group of the second transmission mechanism 35 is in transmission connection with the first bevel gear 332 at the corresponding end of the first connecting rod 33c, the power output end of the second transmission mechanism 35 is provided with one of the stator plate 41c and the rotor plate 42c of the clutch, and the second screw rod 36c 'at the corresponding side is provided with the other one of the stator plate 41c and the rotor plate 42c, so that the power output end of each group of the second transmission mechanism 34 is connected with the second screw rod 36 c' at the corresponding side through the magnetic attraction of the stator plate and the rotor plate.

The second transmission mechanism for driving the two heating tubes of the second heating assembly 2c ″ on the right side to move up and down is taken as an example as follows:

as shown in fig. 20 and 22, the second transmission mechanism 35 includes a third link 351 and a vertical rod 352, wherein the third link 351 extends back and forth, the third link 351 is rotatably disposed on a fixed seat above and to the right of the inner container 1c around its own axis, a rear end of the third link 351 is provided with a fifth conical tooth 3511 engaged with the first conical gear 332, and a front end of the third link 351 is provided with a sixth conical tooth 3512; the vertical rod 352 is vertically arranged, is located on the front side of the worm 343, and is located above the second screw rod 36c ″ on the front side, a seventh conical tooth 3521 in meshing transmission with the sixth conical tooth 3512 is fixedly penetrated at the upper end of the vertical rod 352, a static sheet 41c is arranged at the lower end of the vertical rod 352, a moving sheet 42c of the clutch is arranged at the upper end of the second screw rod 36c ″ on the corresponding side, and the vertical rod 352 is connected with the second screw rod 36c ″ on the corresponding side through electromagnetic attraction of the static sheet 41c and the moving sheet 42c, which is specifically shown in fig. 22.

The inner container of this embodiment is also provided with a hot air chamber 101c, a hot air blower and other structures, which are the same as those of the first embodiment of the present invention, and detailed description thereof will not be repeated.

Claims

1. A heating assembly for a cooking apparatus, comprising:

a mounting plate (23; 23 a; 23 b; 23 c);

at least one heating tube (21; 21 a; 21 b; 21c) arranged along the wall of the mounting plate (23; 23 a; 23 b; 23c) and constrained to move only with respect to the mounting plate (23; 23 a; 23 b; 23 c);

a driving mechanism (3; 3 a; 3 b; 3c) for driving the heating pipe (21; 21 a; 21 b; 21c) to move back and forth along the mounting plate (23; 23 a; 23 b; 23c), and the power output end of the driving mechanism is in driving connection with the heating pipe (21; 21 a; 21 b; 21 c).

2. The heating assembly of claim 1, wherein: the drive mechanism (3; 3 a; 3 b; 3c) is in transmission connection with the heating pipe (21; 21 a; 21 b; 21c) through a linkage piece.

3. The heating assembly of claim 2, wherein: the linkage piece is a screw rod (36; 36 a; 36 b; 36c) extending along the movement direction of the heating pipe (21; 21 a; 21 b; 21c), a nut (214; 214 a; 214 b; 214c) is connected to the heating pipe (21; 21 a; 21 b; 21c), the screw rod (36; 36 a; 36 b; 36c) penetrates through the nut (214; 214 a; 214 b; 214c) and is in threaded connection with the nut, the driving mechanism (3; 3 a; 3 b; 3c) comprises a motor (31; 31 a; 31 b; 31c), and the power output end of the motor (31; 31 a; 31 b; 31c) is in driving connection with the screw rod (36; 36 a; 36 b; 36 c).

4. The heating assembly of claim 3, wherein: the screw rod (36) is provided with threads in a single rotating direction, the number of the heating pipes (21) is two, each heating pipe (21) is provided with one screw rod (36) and one motor (31) correspondingly, the number of the nuts (214) is two, the two nuts are respectively connected to the corresponding heating pipes (21), and any one heating pipe (21) is arranged on the mounting plate (23) in a manner of moving towards or away from the other heating pipe (21) under the direct drive of the respective motor (31).

5. The heating assembly of claim 3, wherein: the heating pipe (21a) has two, nut (214a) have two, and coaxial setting to connect respectively on each heating pipe (21a) that corresponds, screw rod (36a) pass two nut (214a) in proper order and make two heating pipes (21a) interlock mutually.

6. The heating assembly of claim 5, wherein: the screw (36a) is sequentially provided with a first thread part (361a) and a second thread part (362a) which have opposite thread rotating directions along the axial direction of the screw, the first thread part (361a) penetrates through one nut (214a) and is in thread fit with the nut, and the second thread part (362a) penetrates through the other nut (214a) and is in thread fit with the nut.

7. A heating assembly as claimed in any of claims 1 to 6, wherein: the side surface of the mounting plate (23; 23 a; 23 b; 23c) corresponding to the heating pipe (21; 21 a; 21 b; 21c) is a reflecting surface (230) capable of reflecting heat.

8. A heating assembly as claimed in any of claims 1 to 6, wherein: the mounting plate (23; 23 a; 23 b; 23c) is provided with a limiting part, and the heating pipe (21; 21 a; 21 b; 21c) is provided with a part matched with the limiting part, so that the heating pipe (21; 21 a; 21 b; 21c) can only translate relative to the mounting plate (23; 23 a; 23 b; 23c) without rotating.

9. The heating assembly of claim 8, wherein: the heating pipe (21; 21 a; 21 b; 21c) comprises at least one heating unit, the heating unit comprises a main pipe section (211; 211 a; 211 b; 211c), at least one end of the main pipe section (211; 211 a; 211 b; 211c) is bent and extended to form an extension section (212; 212 a; 212 b; 212c), the end of the extension section (212; 212 a; 212 b; 212c) is provided with a terminal (213; 213 a; 213 b; 213c) used for being connected with an electric plug of a power supply, correspondingly, the mounting plate (23; 23 a; 23 b; 23c) is provided with a sliding groove (231; 231 a; 231 b; 231c) extending along the moving direction of the heating pipe (21; 21 a; 21 b; 21c), the terminal (213; 213 a; 213 b; 213c) at least partially penetrates through the corresponding sliding groove (231; 231 a; 231 b; 231c) to be limited in the corresponding sliding groove (231; 231 a; 231 b; 231c), so that the heating pipe (21; 21 a; 21 b; 21c) is slidably connected to the mounting plate (23; 23 a; 23 b; 23 c).

10. The heating assembly of claim 9, wherein: two heating pipes (21; 21 a; 21 b; 21c) are provided, both ends of the main pipe section (211; 211 a; 211 b; 211c) of each heating pipe are provided with the extension sections (212; 212 a; 212 b; 212c) parallel to the sliding groove, and the two extension sections (212; 212 a; 212 b; 212c) of each heating pipe (21; 21 a; 21 b; 21c) are bent and extended in the same direction and are opposite to the extension direction of the extension section of the other heating pipe, and the main pipe sections (211; 211 a; 211 b; 211c) of the heating pipes (21; 21 a; 21 b; 21c) are arranged at least partially side by side, and the extension sections (212; 212 a; 212 b; 212c) of the two heating pipes (21; 21 a; 21 b; 21c) are staggered and spaced apart in the state that the two heating pipes (21; 21 a; 21 b; 21c) are at the closest position.

11. A cooking apparatus having a heating assembly as claimed in any one of claims 1 to 10, characterized in that: the heating device comprises an inner container (1; 1 b; 1c), wherein the heating assembly is arranged on the outer side of the inner container (1; 1 b; 1c), a mounting plate (23; 23 a; 23 b; 23c) in the heating assembly is arranged side by side with a wall plate on the corresponding side of the inner container (1; 1 b; 1c) at intervals, and a heating pipe (21; 21 a; 21 b; 21c) in the heating pipe assembly is positioned between the mounting plate (23; 23 a; 23 b; 23c) on the corresponding side and the wall plate of the inner container.

12. The cooking apparatus of claim 11, wherein: the heating components are at least two groups, and each group of heating components is respectively arranged on the outer side of the corresponding wall plate of the inner container (1; 1 b; 1 c).