CN115363414B

CN115363414B - Steaming cooking device with door locking function

Info

Publication number: CN115363414B
Application number: CN202210728740.1A
Authority: CN
Inventors: 夏保清; 王黎喆
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2022-06-24
Filing date: 2022-06-24
Publication date: 2023-06-20
Anticipated expiration: 2042-06-24
Also published as: CN115363414A

Abstract

The utility model relates to a steaming cooking device with a door locking function, which comprises a box body, an inner container arranged in the box body, a door body used for being covered on an opening at the front side of the inner container, and a heating disc arranged on the bottom wall of the inner container, wherein the heating disc comprises a disc body and a heating pipe arranged on the disc body, the heating pipe comprises an inner ring heating pipe and an outer ring heating pipe which is arranged outside the inner ring heating pipe in a surrounding manner, and the steaming cooking device also comprises a door lock assembly, a first temperature control deformation piece, a transmission mechanism and an elastic resetting piece. Compared with the prior art, the utility model utilizes the heat generated by the inner ring heating pipe to deform the first temperature control deformation piece, so that the first locking piece and the second locking piece can be detachably connected to lock the door body and the opening of the inner container, the door body is prevented from being opened by mistake or being pushed open by the inner container in the cooking process, the user is prevented from being scalded by hot air in the inner container, and the use safety of the steaming cooking device is ensured.

Description

Steaming cooking device with door locking function

Technical Field

The utility model relates to the field of cooking devices, in particular to a steaming cooking device with a door locking function.

Background

A steaming cooking device (e.g., a steam box, a steam oven, etc.) is a cooking device that can heat food with steam, such as: chinese utility model patent application No. CN202210027173.7 (publication No. CN114403693 a) & lt & gt, "a steaming cooking liner structure and electric steamer", chinese utility model patent application No. CN202011581096.7 (publication No. CN112716271 a) & lt & gt, "a steaming and baking all-in-one machine", chinese utility model patent No. ZL202122940902.1 (issued with CN 216416808U) & lt & gt, "a heat radiation structure for micro-steaming oven and micro-steaming oven", etc. Under the steaming mode state, steam in the inner container of the steaming cooking device is large, and if the door body is opened at the moment, high-temperature steam in the inner container can be directly sprayed to users, so that the risk of scalding the users exists. And when the steam pressure in the liner is larger, the hidden danger that the door body is jacked by steam exists, so that the liner leaks gas and other problems are caused.

The steaming cooking device generates steam by heating water through a steam generator, and the steam generator comprises an external steam generator arranged outside the inner container and an internal steam generator arranged inside the inner container, wherein the internal steam generator is generally a heating plate arranged on the bottom wall of the inner container. The heating plate generally comprises an inner heating pipe and an outer heating pipe, the inner heating pipe and the outer heating pipe work simultaneously in a heating stage in a steaming mode, the outer heating pipe does not work in a heat preservation stage, and the inner heating pipe continues to work so as to maintain the temperature of the inner container.

Disclosure of Invention

The first technical problem to be solved by the utility model is to provide a steaming cooking device with a door locking function, which can lock a door body in a working state and can automatically unlock the door body in an unoperated state.

The second technical problem to be solved by the utility model is to provide a steaming cooking device with a door locking function aiming at the prior art, which can realize efficient and reliable locking of a door body.

The utility model solves at least one of the technical problems by adopting the following technical proposal: the utility model provides a steaming cooking device with lock door function, includes the box, sets up the inner bag in this box and be used for covering the door body on the front side opening of this inner bag, is provided with the heating plate on the diapire of above-mentioned inner bag, and this heating plate includes the disk body and sets up the heating pipe on this disk body, and this heating pipe includes the inner circle heating pipe and encloses the outer lane heating pipe of establishing outside this inner circle heating pipe, its characterized in that still includes

The door lock assembly is used for locking the door body on the opening of the inner container and comprises a first locking piece arranged on the door body and a second locking piece arranged on the box body or the inner container,

a first temperature control deformation piece which is arranged on the inner ring heating pipe of the heating disc and can exchange heat with the inner ring heating pipe,

a transmission mechanism for linking the first temperature-controlled deformation member and the second locking member, and

one end of the elastic resetting piece is connected with one end of the second locking piece;

in addition, in the initial state, the elastic resetting piece deforms to apply elastic tension to one end of the second locking piece, the first temperature control deformation piece tightens the other end of the second locking piece through the transmission mechanism, the tightening force is greater than or equal to the elastic tension of the elastic resetting piece acting on the first temperature control deformation piece, the first locking piece and the second locking piece are separated, the elastic resetting piece enables the second locking piece to move towards the first locking piece and to be connected with the first locking piece, in the operating state of the heating disc, the first temperature control deformation piece deforms to loosen the second locking piece, the first locking piece and the second locking piece can be detached and connected, and the elastic resetting piece is in the natural state.

Further, the first temperature control deformation piece is of a rope structure, one end of the first temperature control deformation piece is fixed with the inner ring heating pipe of the heating disc, and the other end of the first temperature control deformation piece is connected with the transmission mechanism. Therefore, the first temperature-control deformation piece is heated to lengthen the length of the first temperature-control deformation piece, so that the second locking piece is released, and the first temperature-control deformation piece is designed into a rope structure, so that the action of the second locking piece can be controlled better through the deformation of the first temperature-control deformation piece.

Further, the first temperature control deformation member extends along the length direction of the inner ring heating pipe, and in the deformation state of the first temperature control deformation member, the first temperature control deformation member can move along the length direction of the inner ring heating pipe. Therefore, the inner ring heating pipe can fully exchange heat with the first temperature control deformation piece, and the deformation response of the first temperature control deformation piece to the temperature change of the inner ring heating pipe is further improved.

Further, a guiding chute extending along the length direction of the inner ring heating pipe is arranged on the inner ring heating pipe, and the first temperature control deformation piece is embedded in the guiding chute and can slide back and forth along the guiding chute. On the one hand, the stable setting of the first temperature control deformation piece can be realized, and on the other hand, the first temperature control deformation piece can move more stably under the deformation state so as to drive the second locking piece to act.

Further, a second temperature control deformation piece which is thermally shrunk and expanded is embedded in the guide chute, and the first temperature control deformation piece is wound on the second temperature control deformation piece. When the heating plate works, the first temperature control deformation piece stretches due to temperature rise, meanwhile, the second temperature control deformation piece contracts due to temperature rise, the first temperature control deformation piece after thermal expansion moves relative to the second temperature control deformation piece, the length of the part extending out of the heating plate is further increased on the basis of thermal expansion, and accordingly the tensioning force on the second locking piece can be further reduced.

Further, the second temperature control deformation piece is of a rope structure extending along the length direction of the inner ring heating pipe. When the heating plate works, the second temperature control deformation piece can uniformly shrink along the length direction of the heating plate, so that the first temperature control deformation piece after thermal expansion can stably move relative to the second temperature control deformation piece to uniformly increase the length of the part extending out of the heating plate, and the locking between the second locking piece and the first locking piece can be stably realized.

Further, the transmission mechanism comprises a transmission rope, a first end of the transmission rope is connected with one end of the first temperature control deformation piece, and a second end of the transmission rope is connected with the second locking piece. Therefore, the first temperature control deformation piece can drive the second locking piece to act through the driving rope when deforming.

Further, the transmission mechanism further comprises an amplifying wheel, the amplifying wheel comprises a first wheel body and a second wheel body, the first wheel body and the second wheel body are coaxially arranged, the wheel diameter of the second wheel body is larger than that of the first wheel body, and the transmission rope is sequentially wound on the first wheel body and the second wheel body along the direction from the first end to the second end of the transmission rope. Through the amplification effect of the amplification wheel, the distance that the driving rope drove the second locking piece to move can be increased on the basis of the same deformation amount of the first temperature control deformation piece, namely the acting force to the second locking piece is amplified, and further the efficiency and the reliability of the door lock assembly for locking and unlocking the door body are improved.

Further, at least one counterweight guide block is hung on the driving rope between the amplifying wheel and the first temperature control deformation piece at intervals. Therefore, the driving rope can be guided, and the driving rope can better pull the second locking piece, so that the kinetic energy loss is avoided.

Further, the wheel surface of the second wheel body of the amplifying wheel is provided with an arc-shaped limit groove which takes the rotating shaft of the second wheel body as the center of a circle and is embedded with a limit shaft extending along the length direction of the rotating shaft of the second wheel body,

in the initial state, the limiting shaft is positioned at one end of the limiting groove, and in the working state of the heating plate, the limiting shaft is positioned at the other end of the limiting shaft. Therefore, the internal structure of the whole transmission mechanism is stable, and the second locking piece can be stably positioned in a locking state or an unlocking state.

Further, the transmission mechanism further comprises a guide wheel which is wound by the transmission rope and can enable the transmission rope to extend along the moving direction of the first locking piece, and the distance between the guide wheel and the second end part of the transmission rope is smaller than that between the amplifying wheel and the guide wheel. The driving rope can be better driven to the second locking piece through the guide wheel, and particularly when the first temperature control deformation piece is contracted, the second locking piece can be better pulled to smoothly unlock the second locking piece and the first locking piece.

Further, the first locking piece and the second locking piece are of block structures, a lock hole is formed in the first locking piece, and a locking piece capable of being inserted into the lock hole is convexly arranged on the second locking piece. Therefore, the first locking piece and the second locking piece can be detachably connected through the insertion connection of the locking piece and the locking hole, and further the first locking piece and the second locking piece are locked.

Further, the first locking piece is fixed on the inner surface of the door body and extends along the front-back direction, the second locking piece vertically extends and can vertically move under the drive of the transmission mechanism, a lock rod horizontally extending forwards is convexly arranged at the front end of the second locking piece, the locking piece is convexly arranged at the top of the lock rod, in an initial state, the first locking piece is positioned on the locking piece, and a lock hole of the first locking piece is opposite to the locking piece from top to bottom. Thus, through the up-and-down movement of the second locking piece, the relative action between the locking piece on the second locking piece and the locking hole of the first locking piece can be realized, and further the locking and unlocking of the first locking piece and the second locking piece can be realized.

Further, the elastic reset piece is a vertically extending tension spring, the upper end of the tension spring is connected to a fixedly arranged mounting seat, and the lower end of the tension spring is connected with the top of the second lock piece. Therefore, the tension spring can stably tension the second locking piece in the initial state and enable the second locking piece to always have upward movement to be locked with the first locking piece, and the second locking piece can be stably locked with the first locking piece in the working state of the heating plate.

Further, the second locking piece is convexly provided with a guide lug which is embedded in a guide rail extending vertically and can move up and down along the guide rail. Therefore, the second locking piece can stably move up and down, the locking piece on the second locking piece can stably move relative to the locking hole of the first locking piece, and the reliability of locking the door body is further improved.

Compared with the prior art, the utility model has the advantages that: in the cooking process, the inner ring heating pipe of the heating plate is always in a working state and is related to the temperature change inside the inner container, and thus the heat generated by the inner ring heating pipe is utilized in the cooking process to deform the first temperature control deformation part, so that the first locking part and the second locking part can be detachably connected to lock the door body with the opening of the inner container, the door body is prevented from being opened by mistake or being pushed up by the inner container in the cooking process, a user is prevented from being scalded by hot air inside the inner container, and the use safety of the steaming cooking device is ensured.

And, the heating stage, the inner circle heating pipe and the outer lane heating pipe of heating plate work simultaneously, the heat that inner and outer circle heating pipe produced acts on first control by temperature change deformation spare jointly, thereby improve the deformation response of first control by temperature change deformation spare, make the door body locked fast, in addition, the heat preservation stage, though outer lane heating pipe stop work, but the residual temperature of outer lane heating pipe still can act on first control by temperature change deformation spare, simultaneously, outer lane heating pipe encloses the periphery of setting in inner circle heating pipe, thereby can reduce the outward dissipation of the heat that the inner circle heating pipe produced, and then make the heat that the inner circle heating pipe produced can more fully be transmitted to on the first control by temperature change deformation spare, improve the reliability of door body locking state.

In addition, when the cooking is finished, the inner ring heating pipe can keep a deformation state within a certain time after the cooking is finished by utilizing the residual Wen Shidi temperature control deformation piece, so that the user is prevented from being scalded by residual hot air in the inner container when the cooking is finished, and the use safety of the steaming cooking device is further improved.

Drawings

Fig. 1 is a schematic structural diagram of a steaming cooking device (in a door unlocked state) according to embodiment 1 of the present utility model;

fig. 2 is a schematic view of the steaming cooking device according to embodiment 1 of the present utility model in another state (in a door locking state);

fig. 3 is a schematic view showing a partial structure of a steaming cooking device according to embodiment 1 of the present utility model;

FIG. 4 is a schematic view showing the structure of a heating plate in embodiment 1 of the present utility model;

FIG. 5 is a schematic view showing the structure of a heating plate in embodiment 2 of the present utility model;

FIG. 6 is an enlarged view of portion A of FIG. 1;

FIG. 7 is an enlarged view of portion B of FIG. 1;

FIG. 8 is an enlarged view of portion A of FIG. 2;

fig. 9 is an enlarged view of a portion B in fig. 2.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for purposes of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and because the disclosed embodiments of the present utility model may be arranged in different orientations, these directional terms are merely for illustration and should not be construed as limitations, such as "upper", "lower" are not necessarily limited to orientations opposite or coincident with the direction of gravity. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly.

Example 1:

as shown in fig. 1 to 4 and 6 to 9, a steaming cooking device (e.g., a steaming box, a steaming oven, etc.) having a door locking function includes a box body (in this embodiment, the box body shows only a bottom plate portion), a liner 1 provided in the box body, and a door body 2 for covering a front side opening of the liner 1, a heating plate 3 is provided on a bottom wall of the liner 1, the heating plate 3 includes a plate body 30 and heating pipes provided on the plate body 30, the heating pipes include an inner ring heating pipe 31 and an outer ring heating pipe 32 surrounding the inner ring heating pipe 31, and an upper mounting plate 12 is horizontally provided above the liner 1.

Further, the steaming cooking device further comprises a door lock assembly 4, a first temperature control deformation member 5, a transmission mechanism and an elastic reset member 8. The door lock assembly 4 is used for locking the door body 2 on the opening of the liner 1, and comprises a first locking piece 41 arranged on the door body 2 and a second locking piece 42 arranged on the box body or the liner 1. The first temperature-controlled deformable member 5 is disposed on the inner ring heating pipe 31 of the heating pan 3 and is capable of heat exchange with the inner ring heating pipe 31. The transmission mechanism is used for linking the first temperature control deformation member 5 and the second locking member 42, the elastic reset member 8 is a tension spring, and one end of the tension spring is connected with one end of the second locking member 42. Still further, in the initial state (i.e., in the non-operating state of the steaming cooking device), the elastic restoring member 8 deforms to apply an elastic tension to one end of the second locking member 42, while the first temperature-control deforming member 5 tightens the other end of the second locking member 42 through the transmission mechanism, the tightening force is equal to or greater than the elastic tension of the elastic restoring member 8 acting on the first temperature-control deforming member 5 (in this embodiment, the tightening force is preferably equal to the elastic tension), the first locking member 41 and the second locking member 42 are disengaged, and the elastic restoring member 8 causes the second locking member 42 to move in the direction of the first locking member 41 and to be connected to the first locking member 41, while in the operating state of the heating plate 3 (i.e., in the operating state of the steaming cooking device), the first temperature-control deforming member 5 deforms to release the second locking member 42, and the first locking member 41 and the second locking member 42 are detachably connected, and the elastic restoring member 8 is in the natural state.

In the working process of the steaming cooking device, the inner ring heating pipe 31 of the heating disc 3 is always in a working state and is related to the temperature change inside the inner container 1, so that the first temperature control deformation piece 5 is deformed by utilizing heat generated by the inner ring heating pipe 31 in the cooking process, and the first locking piece 41 and the second locking piece 42 are detachably connected to lock the opening of the door body 2 and the inner container 1, so that the door body 2 is prevented from being opened by mistake or being pushed open by the inner pressure inside the inner container 1 in the cooking process, a user is prevented from being scalded by hot air inside the inner container 1, and the use safety of the steaming cooking device is ensured. In addition, in the heating stage, the inner ring heating pipe 31 and the outer ring heating pipe 32 of the heating disc 3 work simultaneously, heat generated by the inner ring heating pipe 32 acts on the first temperature control deformation piece 5 together, so that the deformation response of the first temperature control deformation piece 5 is improved, the door body 2 can be locked quickly, in addition, in the heat preservation stage, although the outer ring heating pipe 32 stops working, the residual heat of the outer ring heating pipe 32 still acts on the first temperature control deformation piece 5, meanwhile, the outer ring heating pipe 32 is arranged on the periphery of the inner ring heating pipe 31 in a surrounding mode, so that outward dissipation of heat generated by the inner ring heating pipe 31 can be reduced, and further, the heat generated by the inner ring heating pipe 31 can be transferred to the first temperature control deformation piece 5 more fully, and the reliability of the locking state of the door body 2 is improved. Further, when cooking is finished, the inner ring heating pipe 31 can keep a deformed state within a certain time after cooking is finished by using the residual Wen Shidi temperature control deformation piece 5, so that the user is prevented from being scalded by residual hot air in the inner container 1 when the cooking is finished, and the use safety of the steaming cooking device is further improved.

The specific implementation manner of the first temperature-controlled deformation member 5 is various, in this embodiment, preferably, the first temperature-controlled deformation member 5 is in a wire rope structure, one end of the first temperature-controlled deformation member 5 is fixed with the inner ring heating pipe 31 of the heating disc 3, and the other end is connected with the driving mechanism. In this way, the first temperature-controlled deformation member 5 is heated to lengthen the length thereof, so that the second locking member 42 is released, and it can be seen that the first temperature-controlled deformation member 5 is designed to have a wire structure, so that the movement of the second locking member 42 can be controlled better through the deformation of the first temperature-controlled deformation member 5. Further preferably, the first temperature-controlled deformable member 5 extends along the length direction of the inner ring heating pipe 31, and in the deformed state of the first temperature-controlled deformable member 5, the first temperature-controlled deformable member 5 can move along the length direction of the inner ring heating pipe 31. In this way, the inner ring heating pipe 31 can fully exchange heat with the first temperature control deformation piece 5, so that the deformation response of the first temperature control deformation piece 5 to the temperature change of the inner ring heating pipe 31 is further improved. Still further preferably, the inner ring heating pipe 31 is provided with a guiding chute 311 extending along a length direction thereof, and the first temperature-controlling deformation member 5 is embedded in the guiding chute 311 and can slide back and forth along the guiding chute 311. On one hand, the first temperature control deformation piece 5 can be stably arranged, and on the other hand, the first temperature control deformation piece 5 can move more stably under the deformation state to drive the second locking piece 42 to act. The first temperature-control deformation member 5 is made of a metal material with thermal expansion and cold contraction, specifically copper or an alloy thereof in this embodiment.

Further, the transmission mechanism includes a transmission rope 71, an amplifying wheel 72, and a guiding wheel 73, where a first end of the transmission rope 71 is connected to one end of the first temperature-controlled deformation member 5, and a second end of the transmission rope is connected to the second locking member 42, so that the first temperature-controlled deformation member 5 can drive the second locking member 42 to act through the transmission rope 71 when deformed. The amplifying wheel 72 includes a first wheel body and a second wheel body 722 having a larger wheel diameter than the first wheel body, and the driving rope 71 is sequentially wound around the first wheel body and the second wheel body 722 in a direction from a first end to a second end thereof. Through the amplification effect of the amplification wheel 72, the distance that the driving rope 71 drives the second locking piece 42 to move can be increased on the basis of the same deformation amount of the first temperature control deformation piece 5, namely the acting force on the second locking piece 42 is amplified, and further the efficiency and reliability of locking and unlocking the door body 2 by the door lock assembly 4 are improved.

In this embodiment, a first wheel shaft 723 extending in the left-right direction is fixed to the right side surface of the inner container 1, and the amplification wheel 72 is attached to the first wheel shaft 723. Preferably, the second wheel body 722 of the amplifying wheel 72 has an arc-shaped limit groove 7221 formed on a wheel surface thereof, and the limit groove 7221 is fitted with a limit shaft 724 extending in a longitudinal direction of a central axis of the second wheel body 722 with the central axis of the second wheel body 722 as a center. In the initial state, the limiting shaft 724 is located at one end of the limiting groove 7221, and in the working state of the heating plate 3, the limiting shaft 724 is located at the other end of the limiting shaft 724, so that the internal structure of the whole transmission mechanism is stable, and the second locking member 42 can be stably positioned in the locking state or the unlocking state. In this embodiment, the limiting shaft 724 is fixed to the right side surface of the liner 1 in the left-right direction. In addition, at least one counterweight guide block 711 (two blocks in this embodiment) is hung on the driving rope 71 between the amplifying wheel 72 and the first temperature-control deforming member 5 at intervals, so that the driving rope 71 can be guided, and the driving rope 71 can better pull the second locking member 42, thereby avoiding kinetic energy loss.

Further, the guide wheel 73 is wound with the driving rope 71 such that the driving rope 71 extends in the moving direction of the first locking member 41, and the distance between the guide wheel 73 and the second end of the driving rope 71 is smaller than the distance between the amplifying wheel 72 and the guide wheel 73. The guide wheel 73 enables the driving rope 71 to be better driven to the second locking piece 42, and particularly when the first temperature control deformation piece 5 is contracted, the second locking piece 42 can be better pulled, so that the second locking piece 42 and the first locking piece 41 can be smoothly unlocked. In the present embodiment, the driving rope 71 is changed from the front-rear horizontal movement to the up-down vertical movement by the guiding of the guide wheel 73. A second wheel shaft 731 extending in the left-right direction is fixed to the right side surface of the liner 1, and the guide wheel 73 is attached to the second wheel shaft 731.

The specific implementation structure of the first locking member 41 and the second locking member 42 may be various, in this embodiment, preferably, the first locking member 41 and the second locking member 42 are both block structures, the first locking member 41 is provided with a locking hole 411, and the second locking member 42 is provided with a locking piece 421 protruding from the locking hole 411. In this way, the locking piece 421 and the locking hole 411 can be inserted to detachably connect the first locking piece 41 and the second locking piece 42, so as to lock the first locking piece 41 and the second locking piece 42. Further, the first locking member 41 is fixed on the inner surface of the door body 2 and extends along the front-rear direction, the second locking member 42 extends vertically and can move vertically under the driving of the transmission mechanism, a lock rod 420 extending horizontally and forward is protruding at the front end of the second locking member 42, the lock block 421 is protruding at the top of the lock rod 420, in an initial state, the first locking member 41 is located above the lock block 421, and the lock hole 411 of the first locking member 41 is vertically opposite to the lock block 421. Thus, by the up-and-down movement of the second locking member 42, the locking piece 421 on the second locking member 42 and the locking hole 411 of the first locking member 41 can be relatively moved, so that the locking and unlocking of the first locking member 41 and the second locking member 42 can be realized.

Still further, the surface lining plate 11 is provided around the outer periphery Zhou Shuxiang of the opening of the inner container 1, and the guiding opening 111 for the first locking member 41 to move back and forth is provided on the surface lining plate 11, so that the first locking member 41 can be limited, and the first locking member 41 can be better locked with the second locking member 42. In this embodiment, the upper end of the tension spring is connected to the fixedly installed mounting seat 81, and the lower end is connected to the top of the second locking member 42. In this way, the tension spring can stably tension the second locking member 42 in the initial state and always make the second locking member 42 have a tendency to move upward to lock with the first locking member 41, and can stably lock the second locking member 42 with the first locking member 41 in the operating state of the heating pan 3. Specifically, the mount 81 is fixed to the upper surface of the upper mounting plate.

Further, the second locking member 42 is provided with a guide projection 422 protruding therefrom, and the guide projection 422 is fitted into the guide rail 43 extending vertically and is movable up and down along the guide rail 43. Thus, the second locking member 42 can be stably moved up and down, so that the locking piece 421 on the second locking member 42 can be stably moved relative to the locking hole 411 of the first locking member 41, and the reliability of locking the door body 2 is further improved.

Example 2:

as shown in fig. 5, unlike the embodiment 1, the guide chute 311 is fitted with a heat-shrinkable and cold-expandable second temperature-controllable deformable member 6, and the first temperature-controllable deformable member 5 is wound around the second temperature-controllable deformable member 6. When the heating plate 3 works, the first temperature control deformation piece 5 stretches due to temperature rise, meanwhile, the second temperature control deformation piece 6 contracts due to temperature rise, and the first temperature control deformation piece 5 after thermal expansion moves relative to the second temperature control deformation piece 6, so that the length of the part extending out of the heating plate 3 is further increased on the basis of thermal expansion, and the tensioning force on the second lock piece 42 can be further reduced. The second temperature-controlled deformable member 6 is made of a heat-shrinkable and cold-expandable metal material, such as bismuth or its alloy. Preferably, the cross section of the second temperature-controlled deformation member 6 is shaped, so that the phase change amount of the second temperature-controlled deformation member 6 can be increased.

Further, the second temperature-controlled deformable member 6 has a string structure extending along the longitudinal direction of the inner ring heating pipe 31. When the heating plate 3 works, the second temperature-control deformation member 6 can uniformly shrink along the length direction, so that the first temperature-control deformation member 5 after thermal expansion can stably move relative to the second temperature-control deformation member 6 to uniformly increase the length of the part extending out of the heating plate 3, and the locking between the second locking member 42 and the first locking member 41 can be stably realized.

Claims

1. The utility model provides a steaming cooking device with lock door function, including the box, set up inner bag (1) in this box and be used for covering door body (2) on the front side opening of this inner bag (1), be provided with heating dish (3) on the diapire of above-mentioned inner bag (1), this heating dish (3) include disk body (30) and set up the heating pipe on this disk body (30), this heating pipe includes inner circle heating pipe (31) and encloses outer lane heating pipe (32) of establishing outside this inner circle heating pipe (31), its characterized in that still includes

A door lock assembly (4) for locking the door body (2) on the opening of the inner container (1), which comprises a first locking piece (41) arranged on the door body (2) and a second locking piece (42) arranged on the box body or the inner container (1),

a first temperature control deformation piece (5) which is arranged on the inner ring heating pipe (31) of the heating disc (3) and can exchange heat with the inner ring heating pipe (31),

a transmission mechanism for linking the first temperature-controlled deformable member (5) and the second locking member (42), and

an elastic restoring member (8) having one end connected to one end of the second lock member (42);

in addition, in an initial state, the elastic restoring member (8) deforms to apply elastic tension to one end of the second locking member (42), the first temperature-control deforming member (5) tightens the other end of the second locking member (42) through the transmission mechanism, the tightening force is greater than or equal to the elastic tension of the elastic restoring member (8) acting on the first temperature-control deforming member (5), the first locking member (41) and the second locking member (42) are separated, the elastic restoring member (8) enables the second locking member (42) to move towards the first locking member (41) and to be connected with the first locking member (41), the first temperature-control deforming member (5) deforms to loosen the second locking member (42), and the first locking member (41) and the second locking member (42) are detachably connected, so that the elastic restoring member (8) is in a natural state in an operating state.

2. Steaming cooking device with door locking function according to claim 1, wherein the first temperature-controlled deformation member (5) is in a wire rope structure, one end of the first temperature-controlled deformation member (5) is fixed with an inner ring heating pipe (31) of the heating plate (3), and the other end is connected with the transmission mechanism.

3. The steaming cooking device with a door locking function according to claim 2, wherein the first temperature-controlled deformable member (5) extends along the length direction of the inner ring heating pipe (31), and the first temperature-controlled deformable member (5) is movable along the length direction of the inner ring heating pipe (31) in a deformed state of the first temperature-controlled deformable member (5).

4. A steaming cooking device with door locking function according to claim 3, wherein the inner ring heating pipe (31) is provided with a guiding chute (311) extending along the length direction thereof, and the first temperature-controlling deformation member (5) is embedded in the guiding chute (311) and can slide back and forth along the guiding chute (311).

5. Steaming cooking device with door locking function according to claim 4, characterized in that the guiding chute (311) is embedded with a heat-shrinking and cold-swelling second temperature-controlling deformation member (6), and the first temperature-controlling deformation member (5) is wound on the second temperature-controlling deformation member (6).

6. Steaming cooking device with door locking function according to claim 5, wherein the second temperature-controlled deformation member (6) is a string structure extending along the length direction of the inner ring heating pipe (31).

7. A steaming cooking device with a door locking function according to any one of claims 2 to 6, wherein the transmission mechanism comprises a transmission rope (71), a first end of the transmission rope (71) being connected to one end of the first temperature-controlled deformation member (5) and a second end being connected to the second locking member (42).

8. The steaming cooking device with door locking function according to claim 7, wherein the transmission mechanism further comprises an amplifying wheel (72), the amplifying wheel (72) comprises a first wheel body and a second wheel body (722) with a larger wheel diameter than the first wheel body, which are coaxially arranged, and the transmission rope (71) is sequentially wound on the first wheel body and the second wheel body (722) along a direction from a first end to a second end thereof.

9. The steaming cooking device with door locking function according to claim 8, wherein at least one counterweight guide block (711) is hung on a driving rope (71) between the amplifying wheel (72) and the first temperature control deformation member (5) at intervals.

10. The steaming cooking device with door locking function according to claim 8, wherein the wheel surface of the second wheel body (722) of the amplifying wheel (72) is provided with an arc-shaped limit groove (7221), the limit groove (7221) takes the central shaft of the second wheel body (722) as a center and is embedded with a limit shaft (724) extending along the length direction of the central shaft of the second wheel body (722),

in the initial state, the limiting shaft (724) is positioned at one end of the limiting groove (7221), and in the working state of the heating plate (3), the limiting shaft (724) is positioned at the other end of the limiting shaft (724).

11. The steaming cooking device with a door locking function according to claim 8, wherein the driving mechanism further comprises a guide wheel (73) around which the driving rope (71) is wound and which enables the driving rope (71) to extend in a moving direction of the first locking member (41), and a distance between the guide wheel (73) and a second end of the driving rope (71) is smaller than a distance between the amplifying wheel (72) and the guide wheel (73).

12. The steaming cooking device with door locking function according to any one of claims 1 to 6, wherein the first locking member (41) and the second locking member (42) are both of block structures, a locking hole (411) is formed in the first locking member (41), and a locking piece (421) capable of being inserted into the locking hole (411) is protruded from the second locking member (42).

13. The steaming cooking device with a door locking function according to claim 12, wherein the first locking member (41) is fixed on the inner surface of the door body (2) and extends in the front-rear direction, the second locking member (42) extends vertically and can move vertically under the driving of the transmission mechanism, a lock rod (420) extending horizontally and frontward is convexly arranged at the front end of the second locking member (42), the lock block (421) is convexly arranged at the top of the lock rod (420), in an initial state, the first locking member (41) is positioned above the lock block (421), and the lock hole (411) of the first locking member (41) is opposite to the lock block (421) vertically.

14. A steaming cooking device with door locking function according to claim 13, wherein the elastic restoring member (8) is a vertically extending tension spring, the upper end of which is connected to a fixedly provided mounting seat (81), and the lower end of which is connected to the top of the second locking member (42).

15. Steaming cooking device with door locking function according to claim 13, characterized in that the second locking member (42) is provided with a protruding guiding projection (422) thereon, the guiding projection (422) being embedded in a vertically extending guiding rail (43) and being movable up and down along the guiding rail (43).