CN214691211U

CN214691211U - Food heat preservation device

Info

Publication number: CN214691211U
Application number: CN202022980181.2U
Authority: CN
Inventors: 施昵卡
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-23
Filing date: 2020-12-14
Publication date: 2021-11-12
Anticipated expiration: 2030-12-14

Abstract

A food heat preservation device comprises a plurality of heat preservation covers, each heat preservation cover comprises a side wall and a bottom surface, the bottom surface is arranged at the lower end of the side wall, the heat preservation covers are stacked to form a heat preservation frame, food is placed on the bottom surfaces of the heat preservation covers in the heat preservation frame, the peripheral size of the side walls of the stacked heat preservation covers is gradually reduced from top to bottom, and when the heat preservation device is not used, the side walls of the lower heat preservation covers are placed in the side walls of the upper heat preservation covers, so that the heat preservation covers are nested; or the peripheral size of the side wall of the stacked heat-preservation covers is gradually increased from top to bottom, and when the heat-preservation covers are not used, the side wall of the upper heat-preservation cover is placed in the side wall of the lower heat-preservation cover, so that the heat-preservation covers are nested. The utility model discloses an each heat preservation cover can nest when not using, and the packing of being convenient for, packing are small, easily carry.

Description

Food heat preservation device

Technical Field

The utility model relates to a food heat preservation device.

Background

In the prior art, a food heat preservation device is provided, heat preservation of food is realized by stacking a plurality of heat preservation covers, the product is widely sold on a skatecat net and an elutriation net, for example, a selling link of http:// tail.tmall.com/item.htm/id =614090715013 is sold as the heat preservation device, the heat preservation device comprises a plurality of heat preservation covers, each heat preservation cover comprises a side wall and a bottom surface, the bottom surface is arranged at the lower end of the inner side surface of the side wall, a heat preservation frame is formed after the plurality of heat preservation covers are stacked, and the food is placed on the bottom surface of the heat preservation cover in the heat preservation frame.

The existing food warming device has the following defects: nesting among the heat preservation covers can not be realized, so that the volume is large, and the carrying of the packaging box is not facilitated.

Disclosure of Invention

In order to overcome the defects of the prior food heat preservation device, the utility model provides a food heat preservation device which can be nested with each other between each heat preservation cover.

The technical proposal of the utility model for solving the technical problem is that: a food heat preservation device comprises a plurality of heat preservation covers, each heat preservation cover comprises a side wall and a bottom surface, the bottom surface is arranged at the lower end of the side wall, the heat preservation covers are stacked to form a heat preservation frame, food is placed on the bottom surfaces of the heat preservation covers in the heat preservation frame, the peripheral size of the side walls of the stacked heat preservation covers is gradually reduced from top to bottom, and when the heat preservation device is not used, the side walls of the lower heat preservation covers are placed in the side walls of the upper heat preservation covers, so that the heat preservation covers are nested;

or the peripheral size of the side wall of the stacked heat-preservation covers is gradually increased from top to bottom, and when the heat-preservation covers are not used, the side wall of the upper heat-preservation cover is placed in the side wall of the lower heat-preservation cover, so that the heat-preservation covers are nested.

Further, the cross-sectional shape of the side wall of each heat-preserving cover is the same.

Further, a hollow part is arranged on the bottom surface of each heat preservation cover.

Furthermore, the bottom surface of each heat-insulating cover is provided with an opening, and the bottom surface of each heat-insulating cover is also provided with a baffle which covers the opening.

Furthermore, a bolt is arranged on the baffle plate, a jack is arranged on the bottom surface of the heat-insulating cover, and the bolt is inserted into the jack; or the baffle plate is provided with an insertion hole, the bottom surface of the heat-insulating cover is provided with a bolt, and the bolt is inserted into the insertion hole.

Furthermore, the upper end of the side wall of each heat preservation cover is also provided with a lifting lug extending outwards.

Furthermore, the lifting lug surrounds the side wall of the heat preservation cover.

Further, the outer ring of the lifting lug is the same in size.

Further, when each heat preservation cover piles up, the bottom surface of every heat preservation cover is down.

Further, the peripheral size of its lateral wall of heat preservation cover after piling up is by from last grow gradually down, and the bottom surface of heat preservation cover or the lower part of the lateral wall of heat preservation cover rotate and be connected with the hasp, and when each heat preservation cover piled up, the hasp of upper heat preservation cover forms the extension frame that surpasss the lateral wall after rotating and fixes a position, and the extension frame of upper heat preservation cover erects the upper end of the lateral wall of lower floor's heat preservation cover.

Or the peripheral size of the side wall of the stacked heat-preservation covers is gradually reduced from top to bottom, the upper end of the side wall of each heat-preservation cover is also provided with a bearing part, and the upper-layer heat-preservation cover is placed on the bearing part of the lower-layer heat-preservation cover.

Furthermore, the upper end of the side wall of each heat preservation cover is also provided with a lifting lug extending outwards, and the lifting lug and the bearing part are integrated.

Further, the bottom surface of every heat preservation cover all is equipped with the location muscle of round downwardly extending, and the bottom surface in the location muscle outside forms puts the portion of putting, and when upper heat preservation cover piled up lower floor's heat preservation cover, the portion of shelving of upper heat preservation cover was shelved on lower heat preservation cover's the portion of accepting, and the location muscle of upper heat preservation cover is located the inboard adaptation of the lateral wall of lower floor's heat preservation cover and the lateral wall of lower floor's heat preservation cover.

Or when the heat preservation covers are stacked, the bottom surface of each heat preservation cover faces upwards.

Furthermore, the peripheral size of the side wall of the stacked heat-preservation covers is gradually increased from top to bottom, the bottom surface of each heat-preservation cover is provided with a bearing part, and the upper heat-preservation cover is placed on the bearing part of the lower heat-preservation cover.

Further, the bottom surface of every heat preservation cover all is equipped with the location muscle of round downwardly extending, and the bottom surface in the location muscle outside forms the accepting part, and when upper heat preservation cover piled up lower floor's heat preservation and covers, upper heat preservation cover shelved on the accepting part of lower heat preservation cover, and the location muscle of lower heat preservation cover lies in the inboard adaptation of the lateral wall of upper heat preservation cover and upper heat preservation cover.

Furthermore, the upper end of the side wall of each heat-insulating cover is also provided with a lifting lug extending outwards, a placing part is formed on the inner side of the lifting lug, and when the upper-layer heat-insulating cover is stacked on the lower-layer heat-insulating cover, the placing part of the upper-layer heat-insulating cover is placed on the bearing part of the lower-layer heat-insulating cover.

Or, the bottom surface of every heat preservation cover all is equipped with the location muscle of round downwardly extending, and the inboard bottom surface of location muscle forms the accepting, and when upper heat preservation cover piled up lower floor's heat preservation cover, upper heat preservation cover shelved on lower floor's heat preservation cover's accepting.

Or the peripheral size of the side wall of the stacked heat-preservation cover is gradually reduced from top to bottom, the upper end of the side wall of the heat-preservation cover is rotatably connected with the hasp, when the heat-preservation covers are stacked, the hasp of the upper heat-preservation cover rotates to form an extension frame positioned in the side wall and is positioned, and the extension frame of the upper heat-preservation cover is erected on the bottom surface of the lower heat-preservation cover.

Furthermore, the food heat preservation device also comprises an upper cover, and the upper cover covers the heat preservation cover on the uppermost layer after all the heat preservation covers are stacked into the heat preservation frame.

Furthermore, a handle is arranged on the upper cover.

Furthermore, the upper end face of the upper cover is provided with a hole, and the handle is inserted into the hole and then detachably connected with the upper cover to cover the hole.

Furthermore, the handle is connected with the upper cover in a buckling manner.

Furthermore, the upper cover is provided with air holes.

Furthermore, the upper cover is provided with a rotatable cover plate, and the air holes can be covered or opened by rotating the cover plate.

Furthermore, the food heat preservation device also comprises a bottom cover, wherein the bottom cover comprises side walls and a bottom plate for sealing the side walls, and the heat preservation frames are placed on the bottom cover after being stacked into the heat preservation frames; the size of the side wall of the bottom cover is smaller than that of the side wall with the minimum size, so that the side wall of the bottom cover can be nested in the heat-preservation cover when not in use.

Further, the bottom plate of the bottom cover faces downward when stacking is performed.

Furthermore, the bottom plate of the bottom cover is provided with a lifting boss protruding upwards.

When the heat preservation covers are stacked, when the bottom surface of each heat preservation cover faces downwards, the bottom surface is detachably connected with the side wall, and when the heat preservation covers are stacked, the bottom surface of the upper heat preservation cover is placed at the upper end of the side wall of the lower heat preservation cover; when the heat preservation cover is not used, the bottom surfaces are detached, and the side walls of the heat preservation covers are nested.

Or when the heat preservation covers are stacked and the bottom surface of each heat preservation cover faces upwards, the bottom surface is detachably connected with the side wall, and the side wall of the upper heat preservation cover is placed on the bottom surface of the lower heat preservation cover when the heat preservation covers are stacked; when the heat preservation cover is not used, the bottom surfaces are detached, and the side walls of the heat preservation covers are nested.

Furthermore, a window is arranged on the side wall, a window door is arranged on the window, and the window door can open or close the window.

Further, the window door is hinged at the edge of the window.

Furthermore, when the window door closes the window, the window door and the side wall are positioned through a fixing mechanism.

Or the window door is arranged on the side wall in a sliding mode, and the window can be opened or closed after the window door slides.

The beneficial effects of the utility model reside in that: when not in use, the heat preservation covers can be nested, thereby being convenient for packaging, small in packaging volume and easy to carry.

Drawings

Fig. 1 is a schematic structural diagram of the present invention in a first embodiment in a use state.

Fig. 2 is a schematic structural diagram of the present invention in a non-use state in the first embodiment.

Fig. 3 is a schematic front view of an upper cover according to an embodiment.

Fig. 4 is a schematic diagram of the back structure of the upper cover of the first embodiment.

FIG. 5 is a schematic front view of the heat-insulating cover according to the first embodiment.

FIG. 6 is a schematic view of the back structure of the heat-insulating cover according to the first embodiment.

FIG. 7 is a schematic structural diagram of a bottom cover according to an embodiment.

Fig. 8 is a sectional view of the present invention in a first embodiment in a use state.

Fig. 9 is a cross-sectional view of the present invention in a non-use state according to the first embodiment.

Fig. 10 is a schematic structural view of the present invention in a second embodiment in a use state.

Fig. 11 is a schematic structural diagram of the present invention in a non-use state in the second embodiment.

Fig. 12 is a sectional view of the present invention in a state of use according to the third embodiment.

Fig. 13 is a sectional view of the present invention in a non-use state according to the third embodiment.

Fig. 14 is a schematic structural view of the fourth embodiment of the present invention in a use state.

Fig. 15 is an exploded view of the fifth embodiment of the present invention in a use state.

FIG. 16 is an exploded view of the fifth embodiment after the latch has been released.

Fig. 17 is an exploded view of the present invention in a sixth embodiment in use.

FIG. 18 is an exploded view of the sixth embodiment after the release of the latch.

Fig. 19 is a schematic view showing a structure in which a window door is hinged to an edge of the window.

Fig. 20 is a schematic view of the sliding arrangement of the window and door on the side wall.

Figure 21 is a schematic view of a removable bottom surface.

Fig. 22 is a schematic view of the connection of the bottom surface to the side wall of fig. 21.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

In the first embodiment, referring to fig. 1 to 9, a food heat preservation device includes a plurality of heat preservation covers 1, each heat preservation cover 1 is generally a transparent plastic member, each heat preservation cover 1 includes a side wall 2 and a bottom surface 3, the bottom surface 3 is disposed at the lower end of the side wall 2, in this embodiment, the heights of the heat preservation covers 1 are the same or substantially the same, the heat preservation frames 4 are formed after the heat preservation covers 1 are stacked, food is placed on the bottom surfaces of the heat preservation covers in the heat preservation frames 4, the peripheral dimensions of the side walls of the stacked heat preservation covers are gradually reduced from top to bottom, and when the heat preservation covers are not used, the side walls of the heat preservation covers in the lower layer are placed in the side walls of the heat preservation covers in the upper layer, so that the heat preservation covers 1 are nested.

In the embodiment, the cross-sectional shape of the side wall of each heat-insulating cover 1 is the same, and the term "the same shape" herein means that the cross-sectional shape of the side wall of each heat-insulating cover 1 is the same, but does not mean that the cross-sectional shape and the size of each heat-insulating cover 1 are the same. For example, in the present embodiment, each heat-retaining cover 1 has a substantially quadrangular cross section. The cross section of each heat preservation cover 1 is the same in shape, so that the stacked heat preservation frames 4 are more attractive, the stacked heat preservation frames 4 are more stable, and the heat preservation frames are not easy to collapse.

In this embodiment, a hollow portion 5 is formed on the bottom surface of each heat-insulating cover 1. The hollow part 5 has the following functions: after hot food (such as a dish containing hot dishes) is placed on the bottom surface, considerable hot air is generated, the hollow part 5 is used for the upward passing of the hot air, and if the hollow part 5 is not arranged, the hot air is condensed quickly after meeting the bottom surface, and a plurality of water drops are formed. After setting up fretwork portion 5 simultaneously, every heat preservation cover 1 can also regard as the waterlogging caused by excessive rainfall basket to use alone.

In this embodiment, the bottom surface 3 of each heat-insulating cover 1 is provided with an opening 6, the opening 6 is generally located in the middle of the bottom surface 3, the bottom surface of the heat-insulating cover is further provided with a baffle 7, and the baffle 7 covers the opening 6. The provision of the opening 6 in the bottom surface of the heat-retaining cover is mainly based on the following considerations: the heat preservation cover is generally formed by integrally injection molding plastic, if a general forming mode is adopted during injection molding, feeding is generally carried out in the middle part, demolding is carried out after feeding is finished, a stub bar is formed at a feeding hole and is positioned on the bottom surface, and the heat preservation cover is not attractive and easily scratches hands due to certain sharpness of the stub bar; the bottom surface of heat preservation cover in this embodiment is equipped with opening 6, and practical meaning lies in carrying out the feeding from opening 6's position during the feeding, though can form the stub bar at opening 6 edge after the completion of moulding plastics, only need simple scraping process can be got rid of the stub bar easily this moment. Of course, the baffle 7 is required to cover the opening to effectively place the food.

In the embodiment, the baffle 7 is provided with a bolt 8, the bottom surface 3 of the heat-insulating cover is provided with a jack, and the bolt 8 is inserted into the jack so as to conveniently finish the installation of the baffle 7; or the baffle plate is provided with an insertion hole, the bottom surface of the heat-insulating cover is provided with a bolt, and the bolt is inserted into the insertion hole so as to conveniently complete the installation of the baffle plate.

In this embodiment, the upper end of the side wall of each heat-insulating cover 1 is further provided with a lifting lug 9 extending outwards, so that the lifting lugs 9 can be conveniently held to take the heat-insulating cover 1 up during disassembly. The lifting lug 9 is recommended to surround the side wall of the heat preservation cover 1, so that the heat preservation cover can be taken up from any angle more conveniently.

In this embodiment, the size of the outer ring of the lifting lug 9 is the same, so that the stacked heat preservation frame 4 has higher stability and is not easy to collapse.

In this embodiment, when the heat-insulating covers 1 are stacked, the bottom surface 3 of each heat-insulating cover faces downward, that is, each heat-insulating cover 1 has an opening facing upward. At this time, the upper end of the side wall of each heat-insulating cover 1 is further provided with a receiving part 10, the upper layer heat-insulating cover is placed on the receiving part 10 of the lower layer heat-insulating cover, and the lifting lug 9 is integrated with the receiving part 10 in the embodiment, namely, a part of the lifting lug 9 performs the function of the receiving part 10.

In this embodiment, bottom surface 3 of every heat preservation cover all is equipped with round downwardly extending's location muscle 11, the bottom surface in the 11 outsides of location muscle forms and puts portion 12, upper heat preservation cover piles up when lower floor's heat preservation covers, the portion 12 of shelving of upper heat preservation cover is shelved on the portion 10 of accepting of lower heat preservation cover, and the location muscle 11 of upper heat preservation cover is located the inboard of the lateral wall of lower floor's heat preservation cover and the inboard adaptation of the lateral wall of lower floor's heat preservation cover, the location muscle 11 of upper heat preservation cover pastes tightly or is close to mutually with the inboard of the lateral wall 2 of lower floor's heat preservation cover promptly, thereby make upper and lower heat preservation cover obtain the location, can not produce big rocking.

In this embodiment, the food warming device further includes an upper cover 13, the upper cover 13 covers the uppermost warming cover after the warming covers are stacked into the warming rack 4, and the upper cover 13 is not provided with a hollow portion in general, and functions to cover the uppermost warming cover, so as to ensure that the food on the bottom surface of the uppermost warming cover can be warmed, and certainly, the upper cover 13 is not essential, and the uppermost warming cover can be covered by a simple measure such as a pot cover.

Preferably, a handle 14 is arranged on the upper cover 13, so that the upper cover 13 can be conveniently lifted. In this embodiment the upper end face of upper cover 13 has seted up the trompil, and the central authorities of upper end face of upper cover 13 are generally located to this trompil, handle 14 insert the trompil in back can dismantle with upper cover 13 and be connected and cover the trompil, in this embodiment handle 14 with last cover 13 between specific detachable connection mode be the buckle connection, set up pothook 15 on handle 14, pothook 15 hooks upper cover 13 after stretching into the card is downthehole, can adopt other modes certainly, for example threaded connection etc. The reason for forming the opening on the upper cover 13 is the same as the reason for forming the opening on the bottom surface of the heat-insulating cover, and is not described herein again.

In this embodiment, the upper cover is provided with the air holes 21 for facilitating air exhaust. A rotatable cover plate 16 can be arranged on the upper cover, and the vent holes 21 can be covered or opened by rotating the cover plate 16. A pivot is typically provided on the lid 16 and inserted into the upper lid to allow the lid 16 to rotate.

In this embodiment, the food warming device further comprises a bottom cover 17, wherein the bottom cover 17 comprises side walls 18 and a bottom plate 19 for sealing the side walls 18, the warming frames 4 are placed on the bottom cover 17 after the warming frames 4 are stacked, and the bottom plate 19 of the bottom cover 17 faces downwards when the warming frames 4 are stacked, that is, the bottom cover 17 also has an upward opening. The size of the side wall of the bottom cover 17 is smaller than that of the side wall with the minimum size, so that the side wall of the bottom cover 17 can be nested in the heat-preservation cover when not in use. The effect of setting up end cover lies in: some hot air of food can be condensed into water drops to drop after meeting the heat preservation cover, and the bottom cover 17 can collect the dropped water drops to avoid dropping on the table top; in addition, hot water can be contained in the bottom cover 17, thereby further ensuring the heat preservation function of the utility model.

In this embodiment, the bottom plate 19 of the bottom cover is further provided with a lifting boss 20 protruding upwards, food can be placed on the lifting boss 20, and especially when hot water is contained in the bottom cover, the lifting boss 20 is more beneficial to placing the food, and when hot water is contained in the bottom cover, heat preservation of the food is more beneficial.

In the second embodiment, referring to fig. 10 and 11, in the present embodiment, one or more heat-insulating covers 1 are higher in height, a higher soup bowl or the like can be placed in the higher heat-insulating cover 1, and the rest of the structure and the implementation are the same as those in the first embodiment, and are not described again.

Third embodiment, referring to fig. 12 and 13, in the present embodiment, when the heat-insulating covers 1 are stacked, the bottom surface 3 of each heat-insulating cover 1 faces upward, that is, the heat-insulating cover 1 opens downward when stacked, the peripheral dimension of the side wall of the stacked heat-insulating covers in the present embodiment gradually increases from top to bottom, at this time, the bottom surface of each heat-insulating cover 1 has a receiving portion 10, and the upper heat-insulating cover rests on the receiving portion 10 of the lower heat-insulating cover.

Bottom surface 3 of every heat preservation cover all is equipped with round downwardly extending's location muscle 11 in this embodiment, and the bottom surface in the location muscle 11 outside forms accepting portion 10, and when upper heat preservation cover piled up lower floor's heat preservation and covers, upper heat preservation cover shelved on lower floor's heat preservation cover accepting portion 10.

In this embodiment, the upper end of the lateral wall of every heat preservation cover 1 still is equipped with the ear 9 of carrying of outside extension, the portion 12 is shelved to the 9 inboard formation of carrying the ear, when the upper heat preservation cover piles up lower floor's heat preservation and covers, the portion 12 of shelving of upper heat preservation cover shelves on the portion 10 of accepting of lower heat preservation cover, and the location muscle 11 of lower heat preservation cover is located the inboard of the lateral wall of upper heat preservation cover and the inboard adaptation of the lateral wall 2 of upper heat preservation cover, the location muscle 11 of lower heat preservation cover pastes closely or is close to mutually with the inboard of the lateral wall 2 of upper heat preservation cover promptly, thereby make upper and lower heat preservation cover obtain the location, can not produce big rocking.

The rest of the structure and the implementation are the same as those of the first embodiment, and are not described herein again. It should be noted that fig. 12 and 13 do not show the upper cover and the lower cover, but the upper cover and the lower cover are also applicable to this embodiment.

In the fourth embodiment, referring to fig. 14, in the present embodiment, when the heat-insulating covers 1 are stacked, the bottom surface of each heat-insulating cover 1 faces upward, that is, the opening of each heat-insulating cover 1 faces downward when stacked, and the peripheral dimension of the side wall of each stacked heat-insulating cover 1 gradually increases from top to bottom. The bottom surface of every heat preservation cover 1 all is equipped with the location muscle 11 of round downwardly extending, and the inboard bottom surface 3 of location muscle forms the accepting part, and when upper heat preservation cover piled up lower floor's heat preservation and covers, upper heat preservation cover shelved on lower floor's heat preservation cover's accepting part. The positioning ribs 11 have a certain positioning effect on the heat-insulating covers on the upper layer and the lower layer, so that the heat-insulating covers on the upper layer and the lower layer are positioned, and large shaking cannot be generated. The rest of the structure and the implementation are the same as those in the first embodiment, and are not described again.

In the fifth embodiment, referring to fig. 15 and 16, when the heat-insulating covers 1 are stacked, the bottom surface 3 of each heat-insulating cover 1 faces downward, that is, the opening of each heat-insulating cover faces upward. The peripheral size of its lateral wall of heat preservation cover 1 after piling up from top to bottom grow gradually, and the bottom surface of heat preservation cover 1 or the lower part of the lateral wall of heat preservation cover rotate and be connected with hasp 22, and when each heat preservation cover 1 piled up, the hasp 22 of upper heat preservation cover rotated the back and forms the extension frame that surpasss lateral wall 2 and fix a position, and the extension frame of upper heat preservation cover erects the upper end of the lateral wall of lower floor's heat preservation cover. When the heat preservation covers need to be nested, the hasps 22 are rotated to rotate, so that the upper heat preservation cover can be smoothly nested and enter the lower heat preservation cover.

Hasp 22 rotates to be connected and rotates the back location and form and extend the frame, removes the location when not needing the use, and the mechanism that realizes this kind of function can be simple buckle structure: the hasp 22 is provided with an embedding groove or a slot, the bottom plate or the side wall is provided with a convex point, when the hasp 22 rotates to form an extension frame, the convex point is embedded into the embedding groove to form positioning, and the positioning is released until the force is needed to pull down. The positioning of the hasp can be timed in other modes, for example, a positioning hook is arranged on the hasp, a hanging lug is arranged on the side wall, the positioning hook is hooked on the hanging lug when the hasp rotates to form an extension frame, and the positioning hook is taken down when the positioning is released.

The rest of the structure and the implementation are the same as the first embodiment and are not described again.

In the sixth embodiment, referring to fig. 17 and 18, when the heat-insulating covers are stacked, the bottom surface 3 of each heat-insulating cover 1 faces upward, that is, the opening faces downward when the heat-insulating covers 1 are stacked. The peripheral size of its lateral wall 2 of heat preservation cover after piling up diminishes from top to bottom gradually, and the upper end of the lateral wall 2 of heat preservation cover rotates and is connected with hasp 22, and when each heat preservation cover piled up, the hasp 22 of upper heat preservation cover rotated the back and forms the extension frame that is located lateral wall 2 and fixes a position, and the extension frame of upper heat preservation cover erects on the bottom surface 3 of lower floor's heat preservation cover. When the heat preservation covers need to be nested, the hasps are rotated to rotate, so that the lower heat preservation cover can be smoothly nested and enter the upper heat preservation cover.

Hasp 22 rotates to be connected and rotates the back location and form and extend the frame, removes the location when not needing the use, and the mechanism that realizes this kind of function can be simple buckle structure: the hasp 22 is provided with an embedding groove or an embedding groove, the side wall is provided with a convex point, when the hasp 22 rotates to form an extension frame, the convex point is embedded into the embedding groove to form positioning, and the positioning is released until the force is needed to pull down. The positioning of the hasp can be timed in other modes, for example, a positioning hook is arranged on the hasp, a hanging lug is arranged on the side wall, the positioning hook is hooked on the hanging lug when the hasp rotates to form an extension frame, and the positioning hook is taken down when the positioning is released.

Seventh embodiment, referring to fig. 21 and 22, when the heat-insulating covers are stacked, when the bottom surface 3 of each heat-insulating cover faces downward, the bottom surface 3 is detachably connected with the side wall, and when the heat-insulating covers are stacked, the bottom surface of the upper heat-insulating cover is placed at the upper end of the side wall of the lower heat-insulating cover; when not in use, the bottom surfaces 3 are detached, and the side walls of the heat preservation covers are nested. The bottom surfaces 3 can be stacked.

When the heat preservation covers are stacked, when the bottom surface of each heat preservation cover faces upwards, the bottom surface 3 is detachably connected with the side wall, and the side wall of the upper heat preservation cover is placed on the bottom surface 3 of the lower heat preservation cover when the heat preservation covers are stacked; when not in use, the bottom surfaces 3 are detached, and the side walls 2 of the heat preservation covers are nested. The bottom surfaces 3 can be stacked.

The detachable connection mode of the bottom surface 3 and the side wall can be as follows: the bottom surface 3 is connected with the side wall in a buckling manner; or the bottom surface 3 is connected with the side wall through a screw; or a positioning hole is arranged on the bottom surface 3, the positioning hole comprises a large diameter part 23 of the head part and a small diameter part 24 communicated with the large diameter part 23, positioning legs are arranged on the side wall, the positioning legs comprise a small diameter positioning rod 25 and a large diameter positioning head 26 positioned at the tail end of the small diameter positioning rod 25, the positioning legs enter the large diameter part 23 of the positioning hole when in connection, the large diameter positioning head 26 is positioned behind the bottom surface, then the positioning legs are moved, the small diameter positioning rod 25 enters the small diameter part 24 of the positioning hole, and the large diameter positioning head 26 cannot be withdrawn when being positioned behind the bottom surface, so that positioning is achieved.

Referring to fig. 19 and 20, in the above embodiments, a window 27 may be disposed on the side wall 2, a window 28 is disposed on the window 27, and the window 27 may be opened or closed by the window 28. Therefore, after the food heat preservation covers are stacked into the heat preservation frame, when food needs to be put into or taken out of the heat preservation covers, the food can be put into or taken out through the window 27 only by opening the window 27.

In order to facilitate the opening and closing of the window 27, the utility model discloses recommend two kinds of concrete window and door mounting means: firstly, as shown in fig. 19, the window 28 is hinged at the edge of the window, and when the window 27 needs to be opened or the window 27 needs to be closed, only the window 28 needs to be rotated. When the window 28 closes the window 27, the window 28 is positioned with the side wall by a fixing mechanism, thereby ensuring the closing of the window 27. The fixing mechanism can adopt various modes, such as the connection of a window and a door with a side wall by a pull buckle; or the window and the door and the side wall are both provided with magnets, and the two are positioned by the attraction of the magnets; or a snap connection between the two, etc.

Alternatively, as shown in fig. 20, the window 28 is slidably disposed on the sidewall 2, and the window 27 can be opened or closed after the window 28 is slid. The sliding arrangement of the window and door 28 may be: a sliding rail can be arranged on the side wall 2, and the window 28 is arranged in the sliding rail in a sliding way; or a sandwich is provided in the side wall 2 and the window and door 28 is provided in the sandwich.

Finally, need explain, the utility model discloses in a plurality of keep warm and cover 1 and pile up the back and form the heat preservation frame, but also can increase other heat preservation covers in addition again, pile up with this heat preservation frame again, form higher heat preservation frame. In addition, the added heat-insulating cover can be mutually nested with the previous heat-insulating cover or can not be mutually nested with the previous heat-insulating cover, and is used as a spare for increasing the number of layers of the heat-insulating frame.

Claims

1. The utility model provides a food heat preservation device, includes that a plurality of keeps warm and covers, every keeps warm and covers and includes lateral wall and bottom surface, the bottom surface locate the lower extreme of lateral wall, a plurality of keep warm and cover and pile up the back and form the frame that keeps warm, food is placed on the bottom surface of keeping warm the cover in keeping warm, its characterized in that: the peripheral dimension of the side wall of the stacked heat-preservation covers is gradually reduced from top to bottom, and when the stacked heat-preservation covers are not used, the side wall of the lower heat-preservation cover is placed in the side wall of the upper heat-preservation cover, so that the heat-preservation covers are nested;

2. The food warming device of claim 1, wherein: the cross section of the side wall of each heat preservation cover is the same.

3. The food warming device of claim 1, wherein: the bottom surface of each heat-preservation cover is provided with a hollow part.

4. The food warming device of claim 3, wherein: the bottom surface of each heat-insulating cover is provided with an opening, and the bottom surface of each heat-insulating cover is also provided with a baffle which covers the opening.

5. The food warming device of claim 4, wherein: the baffle is provided with a bolt, the bottom surface of the heat-insulating cover is provided with an insertion hole, and the bolt is inserted into the insertion hole;

or the baffle plate is provided with an insertion hole, the bottom surface of the heat-insulating cover is provided with a bolt, and the bolt is inserted into the insertion hole.

6. The food warming device of claim 1, wherein: the upper end of the side wall of each heat preservation cover is also provided with a lifting lug extending outwards.

7. The food warming device of claim 6, wherein: the lifting lug surrounds the side wall of the heat preservation cover.

8. The food warming device of claim 7, wherein: the outer ring of the lifting lug is the same in size.

9. The food warming device of claim 1, wherein: when each heat preservation cover piles up, the bottom surface of every heat preservation cover is down.

10. The food warming device of claim 9, wherein: the peripheral size of its lateral wall of heat preservation cover after piling up from top to bottom grow gradually, and the bottom surface of heat preservation cover or the lower part of the lateral wall of heat preservation cover rotate and be connected with the hasp, and when each heat preservation cover piled up, the hasp of upper heat preservation cover rotated the back and forms the extension frame that surpasss the lateral wall and fix a position, and the extension frame of upper heat preservation cover erects the upper end of the lateral wall of lower floor's heat preservation cover.

11. The food warming device of claim 9, wherein: the peripheral size of the side wall of the stacked heat-preservation covers is gradually reduced from top to bottom, the upper end of the side wall of each heat-preservation cover is also provided with a bearing part, and the upper-layer heat-preservation cover is placed on the bearing part of the lower-layer heat-preservation cover.

12. The food warming device of claim 11, wherein: the upper end of the side wall of each heat preservation cover is also provided with a lifting lug extending outwards, and the lifting lug and the bearing part are integrated.

13. The food warming device of claim 11, wherein: the bottom surface of every heat preservation cover all is equipped with the location muscle of round downwardly extending, and the bottom surface in the location muscle outside forms puts the portion of putting, and when upper heat preservation cover piled up lower floor's heat preservation and covers, the portion of shelving of upper heat preservation cover was shelved on lower heat preservation cover's the portion of accepting, and the location muscle of upper heat preservation cover is located the inboard adaptation of the lateral wall of lower floor's heat preservation cover and the lateral wall of lower floor's heat preservation cover.

14. The food warming device of claim 1, wherein: when each heat preservation cover piles up, the bottom surface of every heat preservation cover is up.

15. The food warming device of claim 14, wherein: the peripheral size of the side wall of the stacked heat-preservation covers is gradually increased from top to bottom, the bottom surface of each heat-preservation cover is provided with a bearing part, and the upper heat-preservation cover is placed on the bearing part of the lower heat-preservation cover.

16. The food warming device of claim 15, wherein: the bottom surface of every heat preservation cover all is equipped with the location muscle of round downwardly extending, and the bottom surface in the location muscle outside forms the accepting, and when upper heat preservation cover piled up lower floor's heat preservation and covers, upper heat preservation cover shelved on the accepting of lower heat preservation cover, and the location muscle of lower floor's heat preservation cover lies in the inboard adaptation of the lateral wall of upper heat preservation cover and upper heat preservation cover.

17. The food warming device of claim 16, wherein: the upper end of the side wall of each heat-insulating cover is also provided with a lifting lug extending outwards, a placing part is formed on the inner side of the lifting lug, and when the upper-layer heat-insulating cover is stacked on the lower-layer heat-insulating cover, the placing part of the upper-layer heat-insulating cover is placed on the bearing part of the lower-layer heat-insulating cover.

18. The food warming device of claim 15, wherein: the bottom surface of every heat preservation cover all is equipped with the location muscle of round downwardly extending, and the inboard bottom surface of location muscle forms the accepting, and when upper heat preservation cover piled up lower floor's heat preservation and covers, upper heat preservation cover shelved on lower floor's heat preservation cover's accepting.

19. The food warming device of claim 14, wherein: the peripheral size of the side wall of the stacked heat-preservation cover is gradually reduced from top to bottom, the upper end of the side wall of the heat-preservation cover is rotatably connected with the hasps, when the heat-preservation covers are stacked, the hasps of the upper heat-preservation cover rotate to form an extension frame positioned in the side wall and position, and the extension frame of the upper heat-preservation cover is erected on the bottom surface of the lower heat-preservation cover.

20. The food warming device of any one of claims 1 to 19, further comprising: the food heat preservation device also comprises an upper cover, and the upper cover covers the heat preservation cover on the uppermost layer after the heat preservation covers are stacked into the heat preservation frame.

21. The food warming device of claim 20, wherein: the upper cover is provided with a handle.

22. The food warming device of claim 21, wherein: the upper end face of the upper cover is provided with an opening, and the handle is inserted into the opening and then detachably connected with the upper cover to cover the opening.

23. The food warming device of claim 22, wherein: the handle is connected with the upper cover in a buckling manner.

24. The food warming device of claim 20, wherein: the upper cover is provided with air holes.

25. The food warming device of claim 24, wherein: the upper cover is provided with a rotatable cover plate, and the air holes can be covered or opened by rotating the cover plate.

26. The food warming device of any one of claims 1 to 19, further comprising: the food heat preservation device also comprises a bottom cover, wherein the bottom cover comprises a side wall and a bottom plate for sealing the side wall, and after the heat preservation covers are stacked into a heat preservation frame, the heat preservation frame is placed on the bottom cover;

the size of the side wall of the bottom cover is smaller than that of the side wall with the minimum size, so that the side wall of the bottom cover can be nested in the heat-preservation cover when not in use.

27. The food warming device of claim 26, wherein: the bottom plate of the bottom cover faces downwards when stacking is carried out.

28. The food warming device of claim 27, wherein: the bottom plate of the bottom cover is provided with a lifting boss protruding upwards.

29. The food warming device of claim 9, wherein: the bottom surface is detachably connected with the side wall, and the bottom surface of the upper-layer heat-insulating cover is placed at the upper end of the side wall of the lower-layer heat-insulating cover when the heat-insulating covers are stacked;

when the heat preservation cover is not used, the bottom surfaces are detached, and the side walls of the heat preservation covers are nested.

30. The food warming device of claim 14, wherein: the bottom surface is detachably connected with the side wall, and the side wall of the upper-layer heat-insulating cover is placed on the bottom surface of the lower-layer heat-insulating cover when the heat-insulating covers are stacked;

31. The food warming device of any one of claims 1 to 19, further comprising: the side wall is provided with a window, the window is provided with a window door, and the window door can open or close the window.

32. The food warming device of claim 31, wherein: the window door is hinged at the edge of the window.

33. The food warming device of claim 32, wherein: when the window door closes the window, the window door and the side wall are positioned through a fixing mechanism.

34. The food warming device of claim 31, wherein: the window door is arranged on the side wall in a sliding mode, and the window can be opened or closed after the window door slides.