CN115200303A

CN115200303A - Door body, manufacturing method of door body and refrigerating device

Info

Publication number: CN115200303A
Application number: CN202110382785.3A
Authority: CN
Inventors: 刘站站; 王海娟; 赵坤坤; 程学丽; 朱小兵
Original assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd; Chongqing Haier Refrigeration Electric Appliance Co Ltd
Current assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd; Chongqing Haier Refrigeration Electric Appliance Co Ltd
Priority date: 2021-04-09
Filing date: 2021-04-09
Publication date: 2022-10-18

Abstract

The invention provides a door body and a preparation method thereof, and a refrigeration device with the door body, wherein the door body comprises a shell and a door liner which is arranged with the shell in a surrounding manner to form a heat preservation space, the door liner is provided with a fixed bulge which protrudes in a direction far away from the shell, and the fixed bulge is provided with a forming cavity communicated with the heat preservation space; the door body also comprises a vacuum thermal insulation plate arranged between the outer shell and the door liner and a foaming piece filled in the forming cavity; the door body can be effectively thinned, and the requirement of the heat insulation performance of the door body is met; meanwhile, the forming cavity of the fixing protrusion is filled with the foaming part, so that the strength of the fixing protrusion can be enhanced, and the fixing protrusion can support the bottle seat.

Description

Door body, manufacturing method of door body and refrigerating device

Technical Field

The invention relates to the field of refrigerating devices, in particular to a door body, a manufacturing method of the door body and a refrigerating device with the door body.

Background

The existing door body on the refrigerator generally adopts foaming material filling or vacuum heat insulation plate and foaming material composite filling to realize heat preservation and heat insulation of the door body, however, the door body is thick in both foaming material filling and vacuum heat insulation plate and foaming material composite filling modes, so that a real ultrathin door body cannot be realized, and the two modes need foaming, on one hand, a foaming mold is needed, and the cost is high; on the other hand, there is a flash risk.

In view of the above, it is necessary to provide a new door body, a manufacturing method thereof and a refrigeration device having the same to solve the above problems.

Disclosure of Invention

The invention aims to provide a door body, a manufacturing method of the door body and a refrigerating device with the door body.

In order to realize the purpose of the invention, the invention adopts the following technical scheme: a door body comprises a shell and a door liner which forms a heat preservation space with the shell in an enclosing manner, wherein the door liner is provided with a fixed bulge which protrudes in a direction far away from the shell, and the fixed bulge is provided with a forming cavity communicated with the heat preservation space; the door body further comprises a vacuum thermal insulation plate arranged between the outer shell and the door liner and a foaming piece filled in the forming cavity.

As a further improved technical scheme of the invention, the material of the foaming piece is a polyurethane foaming material.

As a further improved technical scheme of the invention, an adhesive layer is arranged between the vacuum insulation panel and the door liner and/or the outer shell.

As a further improved technical scheme of the invention, the material of the bonding layer is one of single-component hot melt adhesive, double-sided adhesive tape and double-component glue.

As a further improved technical solution of the present invention, the fixing protrusion is concavely formed from a side of the door liner facing the housing to a direction away from the housing.

As a further improved technical scheme of the invention, the edge of the outer shell is provided with a first lap joint area, and the edge of the door liner is provided with a second lap joint area matched with the first lap joint area; the door body also comprises a heat insulation piece arranged between the first lap joint zone and the second lap joint zone.

As a further improvement of the present invention, the thermal insulation element is bonded to the first lap zone and/or the second lap zone.

As a further improved technical scheme of the invention, the heat insulation piece is one of aerogel felt, PE foaming piece, polypropylene foaming piece, ethylene propylene diene monomer rubber and melamine foam piece.

In order to achieve the above object, the present invention further provides a method for manufacturing a door body, comprising the following steps:

adhering the vacuum heat insulation plate to the shell;

placing the shell adhered with the vacuum thermal insulation board in an upper mould;

placing a door liner having a fixing projection projecting in a direction away from the housing in a lower mold;

injecting foaming materials into the molding cavity of the fixing bulge;

and (5) closing the mold.

As a further improved technical scheme of the present invention, before "placing the housing adhered with the vacuum insulation panel in the upper mold", the method for manufacturing the door body further comprises the following steps: adhering a heat insulation piece on the edge of the shell; or before "placing a door liner having a fixing projection projecting in a direction away from the outer shell in a lower mold", the method for manufacturing the door body further includes the steps of: and adhering heat insulating parts to the edges of the door liner.

In order to achieve the above object, the present invention further provides another door body manufacturing method, including the steps of:

injecting foaming materials into the molding cavity of the fixing bulge of the door liner to form a door liner prefabricated part;

placing the door lining preform in a lower mold;

adhering the vacuum heat insulation plate to the shell;

and (5) closing the mold.

As a further improvement of the present invention, before "placing the door lining preform in the lower mold", the control method further comprises the steps of: adhering a heat insulating piece on the edge of the door liner; or before the shell adhered with the vacuum insulation panel is placed in the upper die, the preparation method of the door body further comprises the following steps: and adhering heat insulating parts to the edges of the casing.

In order to achieve the above object, the present invention further provides a refrigeration device, which includes a door body, wherein the door body is the door body; or the door body is made by the door body manufacturing method.

The beneficial effects of the invention are: according to the door body, only the vacuum heat insulation plate for heat insulation is arranged between the shell and the door liner, so that the door body can be effectively thinned, and the heat insulation performance requirement of the door body is met; meanwhile, the foaming piece is filled in the molding cavity of the fixing bulge, so that the strength of the fixing bulge can be enhanced, and the fixing bulge can support the bottle seat.

Drawings

Fig. 1 is a sectional view of a door body according to the present invention.

Fig. 2 is a flowchart of a method for manufacturing a door body according to a first embodiment of the present invention.

Fig. 3 is a flowchart of a method for manufacturing a door body according to a second embodiment of the present invention.

Detailed Description

The present invention will be described in detail with reference to the embodiments shown in the drawings, and fig. 1-3 show a preferred embodiment of the present invention. It should be noted that these embodiments are not intended to limit the present invention, and those skilled in the art should be able to make functional, methodical, or structural equivalents or substitutions according to these embodiments without departing from the scope of the present invention.

The invention provides a door body 1, and the door body 1 is used on a refrigerating device.

Referring to fig. 1, the door body 1 includes a shell 11, a door lining 12 enclosing the shell 11 to form a heat insulation space, and a vacuum insulation panel 13 disposed between the shell 11 and the door lining 12, that is, only the vacuum insulation panel 13 for heat insulation is disposed in the heat insulation space, so that the door body 1 can be effectively thinned, and the requirement of the heat insulation performance of the door body 1 can be met, thereby increasing the volume in the refrigeration device and achieving the effect of energy saving.

Further, an adhesive layer 14 is provided between the vacuum insulation panel 13 and the door lining 12 and/or the outer shell 11, so as to fix the vacuum insulation panel 13 on the door lining 12 and/or the outer shell 11, thereby realizing the fixation of the vacuum insulation panel 13.

In a specific embodiment, the vacuum insulation panel 13 is bonded to the door liner 12 and the housing 11 through an adhesive layer 14, so that the vacuum insulation panel 13 can be fixed; on the other hand, the door liner 12 can be fixedly connected to the housing 11 via the vacuum insulation panel 13.

Specifically, the material of the adhesive layer 14 is one of a single-component hot melt adhesive, a double-sided adhesive, and a double-component glue.

The double-component glue is double-component polyurethane or epoxy, and the double-component polyurethane comprises a hydroxyl-containing compound and isocyanate; the epoxy includes epoxy group-containing compounds as well as amino group-containing compounds. Of course, this is not a limitation.

Further, the door liner 12 has a fixing protrusion 121 protruding in a direction away from the housing 11, the fixing protrusion 121 has a molding cavity (not numbered) communicated with the heat preservation space, and the molding cavity is filled with a foaming member 122, so that the strength of the fixing protrusion 121 can be enhanced, the fixing protrusion 121 can support a bottle seat, and meanwhile, a certain heat preservation effect can be achieved, that is, the heat preservation performance of the door body 1 is improved.

Specifically, the foaming member 122 is made of a polyurethane foaming material, that is, the foaming member 122 can be formed by foaming the polyurethane foaming material, so that the cost is low.

It is understood that the fixing protrusions 121 can satisfy the strength requirement by adjusting the density of the polyurethane foam.

Specifically, the fixing protrusion 121 is recessed from the side of the door liner 12 facing the housing 11 to the direction away from the housing 11, so as to enhance the strength and integrity of the door liner 12.

Further, the edge of the outer shell 11 has a first lap zone, and the edge of the door liner 12 has a second lap zone matching with the first lap zone; the door body 1 further comprises a heat insulation piece 15 arranged between the first lap joint area and the second lap joint area, the door liner 12 is isolated from solid phase heat conduction between the shell 11, external heat cannot be transmitted to the door liner 12 through the shell 11, temperature fluctuation in a refrigerating chamber is reduced, and an energy-saving effect is achieved.

Specifically, the outer shell 11 includes a panel 111, a side 112 extending from a periphery of the panel 111 toward the door liner 12, and a bent edge 113 formed by bending inward from an end of the side 112 away from the panel 111, where the first overlapping region is the bent edge 113. After the housing 11 and the door liner 12 are assembled, the bent edge 113 overlaps with an edge of the door liner 12.

Further, the thermal insulation 15 is bonded to the first lap zone and/or the second lap zone.

In one embodiment, the thermal insulation element 15 is bonded to both the first lap zone and the second lap zone, i.e., the door lining 12 and the housing 11 can be connected together by the thermal insulation element 15.

In particular, the thermal insulation element 15 has a single-component hot-melt adhesive or a double-sided adhesive or a double-component glue thereon, so that the thermal insulation element 15 can be bonded to the first and/or second lap zones.

Further, the heat insulation member 15 is one of aerogel felt, PE foam, polypropylene foam, epdm rubber and melamine foam, that is, the heat insulation member 15 is a heat insulation material with high flexibility, and after the door lining 12 and the housing 11 are assembled, the thickness of the compressed heat insulation member 15 is not greater than 2mm, so that the appearance performance of the door body 1 is not affected.

Further, referring to fig. 2, a method for manufacturing the door body 1 according to the first embodiment of the present invention includes the following steps:

s1, adhering a vacuum heat insulation plate 13 to a shell 11;

s2, placing the shell 11 adhered with the vacuum heat insulation plate 13 in an upper die;

s3, placing the door liner 12 with the fixing bulge 121 protruding in the direction away from the shell 11 into a lower die;

s4, injecting foaming materials into the forming cavity of the fixing protrusion 121;

and S5, die assembly.

Wherein, S1 to S5 are for descriptive convenience only and do not represent the order of steps. Steps S1, S2 are for preparing the housing to place the housing 11 in the upper mold, step S3 is for placing the door liner 12 in the lower mold, and step S3 may be performed in synchronization with steps S1, S2, or step S3 may be performed after steps S1, S2, or step S3 may be performed before steps S1, S2.

Specifically, step S1 includes the steps of:

and adhering adhesive layers to the two opposite sides of the vacuum heat insulation plate 13, fixing the vacuum heat insulation plate 13 on the shell through the adhesive layers, and simultaneously, after die assembly, realizing adhesion between the vacuum heat insulation plate 13 and the door liner 12 through the adhesive layers, so that the strength of the door body 1 is enhanced.

In this embodiment, before the step of placing the door liner 12 having the fixing projection 121 projecting in the direction away from the outer shell 11 in the lower mold, the method for manufacturing the door body 1 further includes the steps of: a heat insulator 15 is attached to the edge of the door liner 12. When the foaming material is injected into the molding cavity of the fixing protrusion 121, the heat insulating member 15 can prevent the foaming material from overflowing.

Of course, the present invention is not limited thereto, and in another embodiment, the heat insulating material 15 may be attached to the edge of the housing 11 before "the housing 11 to which the vacuum insulation panel 13 is attached is placed in the upper mold".

When the mould is closed, the foaming material is not cured, and after the foaming material is cured, the door lining 12 can be bonded with the vacuum heat insulation plate 13 and/or the shell 11, so that the connection strength among the shell 11, the vacuum heat insulation plate 13 and the door lining 12 is enhanced.

Further, referring to fig. 3, a method for manufacturing a door body 1 according to a second embodiment of the present invention includes the following steps:

s1', injecting foaming materials into a forming cavity of a fixing bulge 121 of a door liner 12 to form a door liner prefabricated part;

s2', placing the door lining prefabricated member in a lower die;

s3', sticking the vacuum heat insulation plate 13 to the shell 11;

s4', placing the shell 11 adhered with the vacuum heat insulation plate 13 in an upper die;

and S5', die assembly.

Among them, S1 'to S5' are for convenience of description only and do not represent the order of steps. Steps S1', S2' are for placing the door liner 12 in the lower mold, S3', S4' are for preparing the housing 11 to place the housing 11 in the upper mold, steps S1', S2' and steps S3', S4' may be performed simultaneously, or steps S1', S2' may be performed after steps S3', S4', or steps S1', S2' may be performed before steps S3', S4'.

It will be appreciated that in the second embodiment of the invention, the door lining preform is formed first, and that in the assembly process, the foaming-related components are eliminated, saving costs.

Specifically, step S3' includes the steps of:

Further, in the present embodiment, before "placing the door liner preform in the lower mold", the control method further includes the steps of: a heat insulator 15 is attached to the edge of the door liner 12. Of course, the present invention is not limited thereto, and in another embodiment, the heat insulating material 15 may be attached to the edge of the housing 11 before "the housing 11 to which the vacuum insulation panel 13 is attached is placed in the upper mold".

Specifically, the heat insulator 15 is bonded to both the door liner 12 and the housing 11, and the strength of the connection between the door liner 12 and the housing 11 can be increased.

Further, the invention also provides a refrigerating device, which comprises the door body 1.

It can be understood that the prior art can be followed for other structures of the refrigeration apparatus except for the door body 1, and the details are not repeated herein.

The structure of the door body 1 is as described above, or the door body 1 is prepared by the door body 1 preparation method, which is not described herein again.

In summary, in the door body 1 of the present invention, only the vacuum thermal insulation panel 13 for thermal insulation is disposed between the outer shell 11 and the door liner 12, so that the door body 1 can be effectively thinned, and the thermal insulation performance requirement of the door body 1 can be met; meanwhile, the foaming member 122 is filled in the molding cavity of the fixing protrusion 121, which can enhance the strength of the fixing protrusion 121, so that the fixing protrusion 121 can support the bottle seat.

It should be understood that although the specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it will be appreciated by those skilled in the art that the specification as a whole may be appropriately combined to form other embodiments as will be apparent to those skilled in the art.

The above-listed detailed description is merely a detailed description of possible embodiments of the present invention, and it is not intended to limit the scope of the invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention are intended to be included within the scope of the present invention.

Claims

1. A door body comprises a shell and a door liner which forms a heat-preservation space with the shell in a surrounding manner, wherein the door liner is provided with a fixing bulge which protrudes in a direction far away from the shell, and the fixing bulge is provided with a forming cavity communicated with the heat-preservation space; the method is characterized in that: the door body also comprises a vacuum thermal insulation plate arranged between the shell and the door liner and a foaming piece filled in the forming cavity.

2. The door body of claim 1, wherein: the foaming piece is made of polyurethane foaming material.

3. The door body of claim 1, wherein: an adhesive layer is arranged between the vacuum insulation panel and the door liner and/or the outer shell.

4. The door body of claim 3, wherein: the material of the bonding layer is one of single-component hot melt adhesive, double-sided adhesive and double-component glue.

5. The door body of claim 1, wherein: the fixing protrusion is formed by being recessed from one side of the door liner facing the shell to the direction far away from the shell.

6. The door body of claim 1, wherein: the edge of the outer shell is provided with a first lap joint area, and the edge of the door liner is provided with a second lap joint area matched with the first lap joint area; the door body also comprises a heat insulation piece arranged between the first lap joint zone and the second lap joint zone.

7. The door body of claim 6, wherein: the thermal insulation is bonded to the first lap zone and/or the second lap zone.

8. The door body of claim 6, wherein: the heat insulation piece is one of aerogel felt, a PE foaming piece, a polypropylene foaming piece, ethylene propylene diene monomer rubber and a melamine foam piece.

9. A preparation method of a door body is characterized by comprising the following steps: the preparation method of the door body comprises the following steps:

adhering the vacuum heat insulation plate to the shell;

injecting foaming materials into the molding cavity of the fixing bulge;

and (5) closing the mold.

10. The method of manufacturing a door body according to claim 9, wherein: before the step of placing the shell adhered with the vacuum insulation panel in the upper die, the method for manufacturing the door body further comprises the following steps of: adhering a heat insulation piece on the edge of the shell; or before "placing a door liner having a fixing projection projecting in a direction away from the outer shell in a lower mold", the method for manufacturing a door body further includes the steps of: and adhering heat insulating parts to the edges of the door lining.

11. A preparation method of a door body is characterized by comprising the following steps: the method is characterized in that: the preparation method of the door body comprises the following steps:

placing the door lining prefabricated member in a lower die;

adhering the vacuum heat insulation plate to the shell;

and (5) closing the mold.

12. The method of making a door body according to claim 11, wherein: before "placing the door lining preform in the lower mold", the control method further comprises the steps of: adhering a heat insulating piece on the edge of the door liner; or before the shell adhered with the vacuum insulation panel is placed in the upper mold, the preparation method of the door body further comprises the following steps: and adhering heat insulating parts to the edges of the casing.

13. A refrigeration device comprises a door body; the method is characterized in that: the door body is according to any one of claims 1-8; or the door body is made by the method of making a door body according to any one of claims 9-12.