Low-energy-consumption bio-based PVC (polyvinyl chloride) door seal

Abstract

The utility model relates to the field of door seals, in particular to a low-energy-consumption bio-based PVC door seal which comprises a magnetic strip part, a magnetic penetrating cavity used for containing a magnetic strip is formed in the magnetic strip part, a cross beam section is arranged below the magnetic strip part, and a clamping arch house is arranged at the bottom of the cross beam section. The left end of the cross beam section is connected with a supporting section which extends and inclines towards the upper left side, and the upper end of the supporting section is connected with the bottom of the magnetic strip part through an S-shaped elastic bent section; the right end of the cross beam section is connected with the magnetic strip part through an arc-shaped elastic bent section which protrudes outwards towards the upper right side; a U-shaped elastic connecting section is arranged on the left side of the arc-shaped elastic bent section, and the two ends of the U-shaped elastic connecting section are connected with the magnetic strip part and the cross beam section respectively; the cross beam section, the supporting section, the S-shaped elastic bent section, the magnetic strip part and the U-shaped elastic connecting section are enclosed to form a buffer air bag; and the cross beam section, the U-shaped elastic connecting section and the arc-shaped elastic bent section are enclosed to form a main air bag. Transfer of heat inside and outside the refrigerator is reduced, and the heat preservation sealing performance is good.

Description

Technical Field

[0001] The utility model relates to the field of door seals, in particular to a low-energy-consumption bio-based PVC door seal. Background Art

[0002] Energy saving is the future development direction of home appliances. The door seal is the key component connecting the refrigerator body and the door body. Its sealing and thermal insulation effect directly affects the performance and energy consumption of the refrigerator. The door seal conducts heat with the outside world. If the door seal is not tightly sealed, it will cause the heat inside and outside the refrigerator to transfer, increase the refrigerator load, and ultimately increase the refrigerator's energy consumption.

[0003] In the prior art, the Chinese utility model patent with application number 202121068640.8 discloses a microporous structure heat-insulating energy-saving door, in which a buffer airbag and a main airbag are contained. When the refrigerator door is closed, the buffer airbag and the main airbag are compressed and deformed to a certain extent, such as Figure 1 As shown, however, the basic shapes of the internal cavities of the buffer airbag and the main airbag do not change much, and no barrier is formed inside. This leads to increased heat transfer inside and outside the refrigerator, which invisibly increases the energy consumption of the refrigerator. Utility Model Content

[0004] Based on the above problems, the purpose of the utility model is to provide a low-energy consumption bio-based PVC door seal. The utility model adopts the following technical solutions:

[0005] The utility model provides a low-energy consumption bio-based PVC door seal, comprising a magnetic stripe portion, wherein a magnetic cavity for placing a magnetic stripe is arranged in the magnetic stripe portion, a crossbeam section is arranged below the magnetic stripe portion, a card-mounted arch is arranged at the bottom of the crossbeam section, and inverted wings are arranged on both sides of the card-mounted arch, characterized in that:

[0006] The left end of the cross beam section is connected with a support section extending and tilting toward the upper left side, the upper end of the support section is connected to the bottom of the magnetic strip portion through an S-shaped elastic bend section, the S-shaped elastic bend section gradually tilts downward from left to right, the connection position between the S-shaped elastic bend section and the magnetic strip portion is located above the support square cavity, and the support square cavity is arranged on the top of the cross beam section;

[0007] The right end of the cross beam section is connected to the magnetic stripe portion through an arc-shaped elastic bend section convex to the upper right; a U-shaped elastic connecting section is arranged on the left side of the arc-shaped elastic bend section, and the two ends of the U-shaped elastic connecting section are respectively connected to the magnetic stripe portion and the cross beam section, and the convex surface of the U-shaped elastic connecting section faces the arc-shaped elastic bend section;

[0008] The cross beam section, the support section, the S-shaped elastic bending section, the magnetic strip section and the U-shaped elastic connecting section together form a buffer airbag; the cross beam section, the U-shaped elastic connecting section and the arc-shaped elastic bending section together form a main airbag;

[0009] An outer connection airbag connection section is connected to the outer side of the bent part of the arc-shaped elastic bent section, and an auxiliary airbag is arranged on the outer connection airbag connection section.

[0010] Preferably, a cover lining small wing extending obliquely downward to the left is connected to the left end of the cross beam section, and a first inner groove is arranged on the lower surface of the connection position between the cover lining small wing and the cross beam section.

[0011] Preferably, a door seal groove sealing wing is arranged on the clamping arch roof.

[0012] Preferably, an auxiliary airbag sealing wing is arranged on one side of the auxiliary airbag away from the outer connection airbag connection section.

[0013] Preferably, magnetic strip cavity fixing ribs are arranged on the inner wall of the magnetic strip cavity.

[0014] Preferably, a second inner groove is arranged on the upper surface of the connection position between the outer connection airbag connection section and the arc-shaped elastic bent section.

[0015] Preferably, an arc-shaped bent corner is arranged on the upper left side of the left end of the magnetic strip part.

[0016] Compared with the prior art, the beneficial technical effects of the present utility model are as follows:

[0017] The present utility model reduces the heat transfer between the inside and outside of the refrigerator and has excellent heat preservation and sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present utility model will be further described below in conjunction with the drawings.

[0019] Figure 1 It is a schematic diagram of the use state of the door seal in the prior art;

[0020] Figure 2 It is a schematic cross-sectional structure diagram of the door seal of the present utility model;

[0021] Figure 3 It is a schematic diagram of the use state of the present utility model.

[0022] Description of the reference numerals: 1, magnetic strip part; 101, magnetic strip cavity; 2, cross beam section; 3, clamping arch roof; 4, inverted wing; 5, support section; 6, S-shaped elastic bent section; 7, support square cavity; 8, arc-shaped elastic bent section; 9, U-shaped elastic connection section; 10, main airbag; 11, outer connection airbag connection section; 12, auxiliary airbag; 13, cover lining small wing; 14, first inner groove; 15, door seal groove sealing wing; 16, auxiliary airbag sealing wing; 17, magnetic strip cavity fixing rib; 18, second inner groove; 19, arc-shaped bent corner; 20, buffer airbag. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0024] As Figure 2 and 3 shown, in this embodiment, a low - energy - consumption bio - based PVC door seal is disclosed, which includes a magnetic strip part 1. A magnetic strip cavity 101 for placing a magnetic strip is arranged inside the magnetic strip part 1. A cross - beam section 2 is arranged below the magnetic strip part 1. A clamping arch roof 3 is arranged at the bottom of the cross - beam section 2. The clamping arch roof 3 is installed and matched with a door seal groove. Inverted wings 4 are arranged on both sides of the clamping arch roof 3 to prevent the clamping arch roof 3 from disengaging from the door seal groove.

[0025] The left end of the cross - beam section 2 is connected with a support section 5 extending obliquely upward to the upper left. The upper end of the support section 5 is connected with the bottom of the magnetic strip part 1 through an S - shaped elastic bending section 6. The S - shaped elastic bending section 6 gradually slopes downward from left to right. The connection position of the S - shaped elastic bending section 6 and the magnetic strip part 1 is above a support square cavity 7, and the support square cavity 7 is arranged at the top of the cross - beam section 2.

[0026] The right end of the cross - beam section 2 is connected with the magnetic strip part 1 through an arc - shaped elastic bending section 8 protruding outward to the upper right; the wall thickness of the arc - shaped elastic bending section 8 is thinner than that of the cross - beam section 2, so that it fits better with the door lining. A U - shaped elastic connection section 9 is arranged on the left side of the arc - shaped elastic bending section 8. The two ends of the U - shaped elastic connection section 9 are respectively connected with the magnetic strip part 1 and the cross - beam section 2, and the convex surface of the U - shaped elastic connection section 9 faces the arc - shaped elastic bending section 8.

[0027] In this embodiment, the cross - beam section 2, the support section 5, the S - shaped elastic bending section 6, the magnetic strip part 1 and the U - shaped elastic connection section 9 enclose to form a buffer airbag 20. The cross - beam section 2, the U - shaped elastic connection section 9 and the arc - shaped elastic bending section 8 enclose to form a main airbag 10.

[0028] As Figure 3 shown, in the use state, when the refrigerator door is closed, the S - shaped elastic bending section 6 and the U - shaped elastic connection section 9 are compressed and deformed to a certain extent. The deformed parts of the S - shaped elastic bending section 6 and the U - shaped elastic connection section 9 are close to or near the support square cavity 7. In this way, multiple similar independent small airbag structures are formed inside the buffer airbag 20, increasing the temperature gradient, reducing the leakage of cold air, and reducing the heat transfer between the inside and outside of the refrigerator.

[0029] In this embodiment, the left end of the cross - beam section 2 is connected with a cover lining small wing 13 extending obliquely downward to the lower left. A first inner groove 14 is arranged on the lower surface of the connection position of the cover lining small wing 13 and the cross - beam section 2. The first inner groove 14 reduces the thickness of the connection here, making the cover lining small wing 13 fit tightly with the door lining and preventing dust from entering.

[0030] In this embodiment, a door seal groove sealing fin 15 is provided on the snap-on arch roof 3. The door seal groove sealing fin 15 has strong deformation ability and adaptability. When the snap-on arch roof 3 is installed and fitted with the door seal groove, it can be smoothly inserted and flattened against the top of the door seal groove, effectively preventing the cold air inside the box from leaking out along the gap of the door seal groove. At the same time, the door seal groove sealing fin 15 divides the bottom gap of the door seal groove into two equivalent air bags, namely an inner air bag and an outer air bag, reducing the convective heat transfer efficiency between the inside and outside and improving the heat insulation and separation effect.

[0031] In this embodiment, an outer air bag connecting section 11 is connected to the outer side of the bent part of the arc-shaped elastic bent section 8, and an auxiliary air bag 12 is provided on the outer air bag connecting section 11. A second inner groove 18 is provided on the upper surface of the connection position between the outer air bag connecting section 11 and the arc-shaped elastic bent section 8. An auxiliary air bag sealing fin 16 is provided on one side of the auxiliary air bag 12 away from the outer air bag connecting section 11.

[0032] The design of the auxiliary air bag 12, whose shape matches the structure of the mating part between the box liner and the door liner, can effectively seal the gap here, further preventing the leakage of cold air inside the box, reducing heat conduction, and improving the problem of condensation and frosting in the refrigerator. The design of the second inner groove 18 reduces the support of the air bag, making the air bag easy to press and fit, preventing the elastic force from being too large when the refrigerator door is closed and resulting in improper closing of the door. At the same time, an auxiliary air bag sealing fin 16 extends outside the auxiliary air bag 12, and the auxiliary air bag sealing fin 16 is in interference fit with the door liner to form two air bags, further reducing the heat exchange efficiency at the mating part between the door liner and the door seal.

[0033] In this embodiment, a magnetic strip cavity fixing rib 17 is provided on the inner wall of the magnetic strip cavity 101. The magnetic strip cavity fixing rib 17 presses and fixes the magnetic strip to prevent the magnetic strip from moving in the magnetic strip cavity 101.

[0034] In this embodiment, an arc-shaped bend 19 is provided on the upper left side of the left end of the magnetic strip part 1 to avoid the situation of jamming the door seal when closing the door.

[0035] In this embodiment, the door seal is applicable to large-spacing refrigerators with a maximum door box body gap of 20 mm.

[0036] The door seal in this embodiment is mainly processed from PVC resin. When producing, a bio-based plasticizer can be additionally added. The bio-based plasticizer is mainly made of natural or synthetic polymer materials obtained from renewable resources, and has the characteristics of being renewable, degradable, and environmentally friendly. It can not only ensure that the PVC material has various comprehensive functions, but also reduce the potential harm to human health and the natural environment. It is an inevitable trend for the sustainable development of the future plasticizer industry and even the PVC processing industry. The bio-based plasticizer is an existing product, and technicians in this field can purchase existing products on the market.

[0037] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A low-energy consumption bio-based PVC door seal, comprising a magnetic stripe portion (1), wherein a magnetic cavity (101) for placing a magnetic stripe is arranged in the magnetic stripe portion (1), a crossbeam section (2) is arranged below the magnetic stripe portion (1), a card-mounted arch (3) is arranged at the bottom of the crossbeam section (2), and inverted wings (4) are arranged on both sides of the card-mounted arch (3), characterized in that: The left end of the cross beam section (2) is connected to a support section (5) extending and tilting toward the upper left side; the upper end of the support section (5) is connected to the bottom of the magnetic stripe portion (1) via an S-shaped elastic bend section (6); the S-shaped elastic bend section (6) gradually tilts downward from left to right; the connection position between the S-shaped elastic bend section (6) and the magnetic stripe portion (1) is located above a support square cavity (7); and the support square cavity (7) is arranged at the top of the cross beam section (2); The right end of the cross beam section (2) is connected to the magnetic stripe portion (1) via an arc-shaped elastic bend section (8) convex to the upper right; a U-shaped elastic connecting section (9) is provided on the left side of the arc-shaped elastic bend section (8), and the two ends of the U-shaped elastic connecting section (9) are respectively connected to the magnetic stripe portion (1) and the cross beam section (2), and the convex surface of the U-shaped elastic connecting section (9) faces the arc-shaped elastic bend section (8); The cross beam section (2), the support section (5), the S-shaped elastic bending section (6), the magnetic strip section (1) and the U-shaped elastic connecting section (9) together form a buffer airbag (20); the cross beam section (2), the U-shaped elastic connecting section (9) and the arc-shaped elastic bending section (8) together form a main airbag (10); The outer side of the curved portion of the arc-shaped elastic curved section (8) is connected to an external airbag connecting section (11), and an auxiliary airbag (12) is arranged on the external airbag connecting section (11).

2. The low-energy bio-based PVC door seal according to claim 1, characterized in that: The left end of the cross beam section (2) is connected to a cover lining winglet (13) extending and tilting toward the lower left side, and a first inner groove (14) is provided on the lower surface of the connection position between the cover lining winglet (13) and the cross beam section (2).

3. The low-energy bio-based PVC door seal according to claim 1, characterized in that: The card-mounted arch house (3) is provided with a door sealing groove sealing wing (15).

4. The low energy consumption bio-based PVC door seal according to claim 1, characterized in that: The auxiliary airbag (12) is provided with an auxiliary airbag sealing wing (16) on a side away from the external airbag connecting section (11).

5. The low energy consumption bio-based PVC door seal according to claim 1, characterized in that: A magnetic strip cavity fixing rib (17) is provided on the inner wall of the magnetic penetration cavity (101).

6. The low energy consumption bio-based PVC door seal according to claim 1, characterized in that: A second inner groove (18) is provided on the upper surface of the connection position between the external airbag connection section (11) and the arc-shaped elastic bending section (8).

7. The low energy consumption bio-based PVC door seal according to claim 1, characterized in that: An arc-shaped corner (19) is provided on the upper left side of the magnetic stripe portion (1).

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