CN108180693B - A kind of refrigerator - Google Patents
A kind of refrigerator Download PDFInfo
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- CN108180693B CN108180693B CN201711468668.9A CN201711468668A CN108180693B CN 108180693 B CN108180693 B CN 108180693B CN 201711468668 A CN201711468668 A CN 201711468668A CN 108180693 B CN108180693 B CN 108180693B
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- magnetic
- door
- strip
- door handle
- refrigerator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/02—Doors; Covers
- F25D23/028—Details
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Refrigerator Housings (AREA)
Abstract
The invention discloses a refrigerator and relates to the technical field of refrigeration devices. The door opening force required when the door is opened can be reduced on the premise of not increasing additional parts, and the handle is prevented from being broken. The invention relates to a refrigerator, which comprises a refrigerator body, wherein the refrigerator body is provided with a door frame; the door body is pivoted with the box body at one side edge of the door body, and a sealing magnetic stripe with certain elasticity is fixed on the inner surface of the door body at a position corresponding to the door frame; when the door body is in a closed state, the sealing magnetic stripe can generate magnetic attraction with the door frame, so that the sealing magnetic stripe is tightly pressed on the surface of the door frame; the door body is also provided with a door handle, and the sealing magnetic strip is configured so that the magnetic attraction force generated on average in unit length is smaller in a part relatively close to the door handle than in a part relatively far away from the door handle. The invention can be used for sealing between the door body and the box body of the refrigeration device.
Description
Technical Field
The invention relates to the technical field of cold storage devices, in particular to a refrigerator.
Background
The door body of the refrigerator, the vertical refrigerator and other cold storage devices usually achieves a sealing effect through the sealing magnetic strip, the sealing magnetic strip is arranged at the edge of the door body, the sealing magnetic strip has suction force, the action is mainly the attraction of a metal door frame at the opening of the box body, the closing state of the door body is ensured, and the elastic strip-shaped air bag is driven to be tightly attached to the frame of the box body under the action of the suction force, so that the sealing effect is achieved.
Usually, certain requirements are required on the magnetic force of the sealing magnetic stripe, and if the suction force of the sealing magnetic stripe is too small, the door body is not closed tightly, so that cold leakage is caused. Therefore, it is a basic requirement to ensure the airtightness of the refrigerator. However, because there is the negative pressure in the refrigerator refrigeration back box, make the door body very difficult to open under the effect of negative pressure and magnetic stripe suction after the door body is closed, especially the big single door and the refrigeration show cupboard glass door body that the door body height is greater than 1 meter, door strip of paper used for sealing length greatly increased, suction increase thereupon, the power of opening the door that needs also increases relatively to cause the use inconvenient, still can cause the handle fracture even.
The prior art solves the problems by a scheme of arranging a power-assisted door opening device, an exhaust valve or a balance valve, but the scheme needs to add additional parts on a door body or a box body, so that the installation process is complex and the cost is increased.
Disclosure of Invention
The embodiment of the invention provides a refrigerator, which can reduce door opening force required by door opening on the premise of not increasing additional parts and prevent a handle from being broken.
In order to achieve the above object, an embodiment of the present invention provides a refrigerator, which includes a cabinet having a door frame; the door body is pivoted with the box body at one side edge of the door body, and a sealing magnetic stripe with certain elasticity is fixed on the inner surface of the door body at a position corresponding to the door frame; when the door body is in a closed state, the sealing magnetic stripe can generate magnetic attraction with the door frame, so that the sealing magnetic stripe is tightly pressed on the surface of the door frame; the door body is further provided with a door handle, and the sealing magnetic strip is constructed so that the magnetic attraction force generated on average in unit length is smaller in a part relatively close to the door handle than in a part relatively far away from the door handle.
Compared with the prior art, the refrigerator provided by the embodiment of the invention has the advantages that the magnetic attraction force generated on average in unit length is smaller when the magnetic stripe bag is arranged at the part relatively close to the door handle than the part relatively far away from the door handle, so that the part relatively close to the door handle is easy to be attached to the metal door frame no longer tightly when the door body is opened at a smaller angle, air outside the door body can enter the inside of the refrigerator chamber very easily from the part, thereby reducing the pressure difference between the inside and the outside of the refrigerator chamber, enabling the door body to be driven to open only by overcoming the magnetic force between the adsorption section and the metal door frame, unlike the prior art, the door body is not opened until the whole magnetic stripe bag is not tightly attached to the metal door frame at a relatively large angle, so that the air can enter to eliminate the internal and external pressure difference; that is, compared with the prior art, the door body is opened by a smaller angle to reach the critical point of eliminating the internal and external pressure difference, so that the door body is opened more easily and smoothly.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention;
FIG. 2 is a first stress analysis diagram of the refrigerator according to the embodiment of the present invention;
FIG. 3 is a second graph illustrating stress analysis of the refrigerator according to the embodiment of the present invention;
FIG. 4 is a third diagram of force analysis of the refrigerator according to the embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a third embodiment of a sealing magnetic stripe in a refrigerator according to an embodiment of the present invention;
FIG. 6 is a partial cross-sectional view of a sixth embodiment of a sealing magnetic stripe of a refrigerator according to an embodiment of the present invention;
FIG. 7 is a schematic view of the structure of a magnetic stripe in a sixth embodiment of a sealed magnetic stripe;
FIG. 8 is a schematic view of a seventh embodiment of a magnetic stripe in the form of a magnetic stripe;
FIG. 9 is a schematic view of the structure of a magnetic stripe in an eighth embodiment of a sealed magnetic stripe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, a refrigerator according to an embodiment of the present invention includes a refrigerator body 1, where the refrigerator body 1 is provided with a door frame 11; the refrigerator further comprises a door body 2, wherein one side edge of the door body 2 is pivoted with the refrigerator body 1, and a sealing magnetic stripe 3 with certain elasticity is fixed on the inner surface of the door body 2 corresponding to the position of the door frame; when the door body 2 is in a closed state, the sealing magnetic stripe 3 can generate magnetic attraction with the door frame, so that the sealing magnetic stripe 3 is tightly pressed on the surface of the door frame; the door body 2 is also provided with a door handle 4, and the sealing magnetic strip 3 is configured such that a portion 31 thereof relatively close to the door handle generates a smaller magnetic attraction force on average per unit length than a portion 32 thereof relatively far from the door handle. A direction a in fig. 1 indicates a door opening direction, and a direction B indicates a direction in which outside air enters the inside of the refrigerator.
As shown in fig. 2, when the refrigerator door 2 is in a closed state, the magnetic stripe pocket which is fixedly adhered to the door 2 and has a certain elasticity is fixed, because the magnetic attraction Fmax is provided between the inner magnetic stripe and the metal door frame, the distance between the door 2 and the refrigerator body 1 is D0, and the magnetic stripe pocket generates elastic deformation in the width direction and is compressed and tightly adhered to the surface of the door frame, so that the combination part of the refrigerator door 2 and the refrigerator door frame has good tightness; after the door body 2 is closed for a certain time, the air pressure in the refrigerator is reduced due to temperature reduction, and the pressure difference between the inner surface and the outer surface of the door body 2 generates pressure Fq which enables the door body 2 to further press the door frame through the magnetic stripe bag. The magnetic attraction force Fmax is the same as the magnetic attraction force Fmax, when the door body 2 needs to be opened, the opening of the door body 2 can be blocked by the pressure Fq generated by the internal and external pressure difference until a gap is generated at the joint of the magnetic stripe bag and the door frame, so that the external air of the refrigerator enters the interior, the internal and external pressure difference and the generated force can disappear.
With the present invention, as shown in fig. 3, in the process of opening the door body 2, the rigid door body 2 first receives the pulling force Fk and tends to rotate outward around the door axis along the radius R; at this time, the magnetic stripe bag is not only subjected to outward tension due to the fact that a part of the magnetic stripe bag is adhered to the inner side face of the door body 2, but also subjected to inward suction of the metal door frame and pressure generated by internal and external pressure difference due to the fact that the magnetic stripe in the magnetic stripe bag is magnetic, so that the internal stress generated by elastic compression of the magnetic stripe bag is released, the magnetic stripe bag is separated from the surface of the door frame, and the distance between the door body 2 on the door opening side and the box body 1 is changed into D0.
As shown in fig. 4, when the door 2 is further forced in the opening direction, it will overcome the sum of the magnetic attraction force Fmin between the magnetic strip and the metal door frame and the pressure Fq generated by the difference between the internal pressure and the external pressure, and will rotate a slight angle, and at the same time, the part of the magnetic strip bag abutting against the rigid door 2 will generate a slight outward displacement; however, since the magnetic stripe bag is always in the elastic compression state when the door body 2 is in the closed state, the portion of the magnetic stripe bag pressed on the doorframe surface does not immediately separate from the doorframe surface, but only the elastic compression state of the magnetic stripe bag itself is relieved, that is, the magnetic stripe bag is stretched by a small dimension dt0 in the width direction when viewed from the surface.
When the force application force of the door body 2 is further increased along the opening direction, compared with the part relatively far away from the door handle, the part of the magnetic stripe bag relatively close to the door handle is overcome firstly due to the small magnetic force between the magnetic stripe bag and the metal door frame, so that the magnetic stripe bag is only attached to the door frame and is not attached to the door frame, and therefore the external air rate of the refrigerator firstly enters the interior of the refrigerator cavity, and then the internal and external pressure difference and the pressure Fq generated by the internal and external pressure difference and acting on the door body 2 disappear; and then, the door body 2 can be opened only by overcoming the magnetic attraction between the part of the magnetic stripe bag relatively far away from the door handle and the metal door body 2.
Compared with the prior art, the magnetic stripe bag is arranged in the part relatively close to the door handle and the part relatively far away from the door handle, so that the magnetic attraction force generated on average in unit length is smaller, the part relatively close to the door handle is easy to be attached to the metal door frame no longer tightly when the door body 2 is opened at a smaller angle, and the air outside the door body 2 can enter the refrigerator chamber from the position very easily, so that the pressure difference between the inside and the outside of the refrigerator chamber is reduced, the door body 2 can be driven to be opened by the force subsequently applied to the door body 2 only by overcoming the magnetic force between the adsorption section and the metal door frame, and the pressure difference between the inside and the outside of the air can be eliminated by the fact that the door body 2 is opened to a relatively large angle when the attachment between the whole magnetic stripe bag and the metal door frame is not tightly; that is, compared with the prior art, the door body 2 is opened by a smaller angle to reach the critical point of eliminating the internal and external pressure difference, so that the door body 2 is opened more easily and smoothly.
The structure of the sealing magnetic stripe 3 can be realized in the following ways:
in the first embodiment, the sealing magnetic stripe 3 comprises an elastic strip and magnetic particles embedded in the elastic strip, and the magnetic particles are distributed sparsely in a part close to the door handle in the length direction of the elastic strip compared with a part relatively far away from the door handle. Therefore, the magnetic attraction force of the local part of the sealing magnetic strip 3 is changed by changing the distribution density of the magnetic particles, so that the purpose that the magnetic attraction force generated on average in a unit length is smaller in a part relatively close to the door handle than in a part relatively far away from the door handle is achieved.
In the second embodiment, the sealing magnetic stripe 3 includes an elastic strip and magnetic particles embedded in the elastic strip, and in the length direction, the portion near the door handle is a hollow or hollowed structure or has a blind hole or a through hole or a notch or a cut edge. The magnetic particles can be homogeneously distributed in this case.
In a third embodiment, as shown in fig. 5, the sealing magnetic stripe 3 includes an elastic strip (not shown) and a magnetic strip 34 with a constant thickness embedded in the elastic strip, wherein the magnetic strip 34 has one or two or more missing portions 341 near the door handle. Therefore, the external structure of the elastic strip can be kept unchanged, and only 34 magnetic strips are required to be arranged at intervals. The preparation is convenient.
Wherein, the part that the rectangular disappearance of magnetism can fill other materials that do not have magnetism, for example the rectangular material of elasticity to guarantee the stability of sealed magnetic stripe 3 overall structure, prevent that the rectangular local of elasticity from collapsing.
In a fourth embodiment, the sealing magnetic stripe 3 comprises an elastic strip and a magnetic strip embedded in the elastic strip, wherein the average cross-sectional area of the magnetic strip is smaller at a portion close to the door handle than at a portion relatively far away from the door handle. Thus, the magnetic attraction force can be changed by changing the sectional area of the magnetic stripe.
In a fifth embodiment, the sealing magnetic stripe 3 comprises an elastic strip and a magnetic strip embedded in the elastic strip, wherein the magnetic strip comprises two magnetic materials, namely a relatively strong magnetic material and a relatively weak magnetic material, the magnetic strip is arranged at a part close to the door handle and is made of the relatively weak magnetic material, and the magnetic strip is arranged at a part far away from the door handle and is made of the relatively strong magnetic material. From this, can change magnetic attraction under the unchangeable circumstances of overall structure guaranteeing.
Sixth embodiment, as shown in fig. 6 and 7, the sealing magnetic stripe includes an elastic strip 33 and a magnetic strip 34 embedded in the elastic strip, the magnetic strip 34 is provided with a notch at a portion close to the door handle, as shown in fig. 7, the notch includes a first notch 342 and a second notch 343, the first notch 342 is opened on a first sidewall of the magnetic strip 34, the second notch 343 is opened on a second sidewall of the magnetic strip 34, the first sidewall and the second sidewall are opposite sidewalls of the magnetic strip 34, and the first notch 342 and the second notch 343 are alternately arranged along a length direction of the magnetic strip 34. Thus, while the magnetic attraction of the portion close to the door handle is reduced, the magnetic force distribution of the magnetic strip 34 can be made as uniform as possible, and the magnetic attraction when attracting the door frame is more stable.
Optionally, the first notch 342 and the second notch 343 penetrate the magnetic strip 34 along the thickness direction of the magnetic strip 34 for easy processing.
Seventh embodiment, sealed magnetic stripe 3 include that elasticity is rectangular and embedded set up in the magnetic strip in the elasticity is rectangular, has seted up the blind hole on the magnetic strip. Since the magnetic strip is generally magnetized only on one side surface during magnetization, as shown in fig. 8, the magnetized magnetic strip 34 includes a magnetic surface 345 and a non-magnetic surface 346 oppositely disposed, the magnetic surface 345 is used for attraction, and the magnetism of the magnetic strip decreases from the magnetic surface 345 to the non-magnetic surface 346. Specifically, when the blind hole scheme is adopted, the blind hole 344 may be opened on the magnetic surface 345 (as shown in fig. 8), or may be opened on the non-magnetic surface 346, or both the magnetic surface 345 and the non-magnetic surface 346 may be opened at different positions, so that the effect is different, for example, when the blind hole is opened on the magnetic surface 345, because the magnetic force of the magnetic surface 345 is larger, the larger magnetism may be removed, the magnetic attraction force of the portion close to the door handle may be reduced greatly, and the door body 2 may be opened conveniently. When the blind hole is formed on the non-magnetic surface 346, the magnetic surface 345 can be kept as a complete plane, so that the part close to the door handle can be prevented from being deformed inwards, and cold leakage can be prevented.
Eight embodiments, sealed magnetic stripe 3 include that elasticity is rectangular and embedded set up in the magnetic strip in the elasticity is rectangular, has seted up the through-hole on the magnetic strip. As shown in fig. 9, a through hole 347 extends through the magnetic surface 345 and the non-magnetic surface 346. Therefore, the magnetic adsorption force of the part of the sealing magnetic strip 3 close to the door handle can be greatly weakened, and the door opening force required when the door is opened is smaller.
The shape of the blind hole and the through hole can be various, such as a round hole, a square hole, a long hole, an elliptical hole, and the like, and is not limited herein. In order to facilitate the control of the length of the portion of the sealing magnetic stripe 3 close to the door handle, a long hole structure is preferably adopted, and the length direction of the long hole is consistent with the length direction of the magnetic strip. Thus, the length of the portion of the sealing magnet 3 close to the door handle can be designed by changing the length of the elongated hole.
The magnetic strip can be a rubber magnet which is made of magnetic powder, polyethylene and other additives through extrusion, calendering and magnetizing.
Preferably, the length of the portion near the door handle has a preferred range, i.e., 35-45 mm. When the length of the part close to the door handle is selected to be within the range, the part close to the door handle can not leak cold, and a good pressure relief effect can be achieved when the door is opened.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (2)
1. A refrigerator comprises a refrigerator body, a door frame and a door frame, wherein the refrigerator body is provided with the door frame; the door body is pivoted with the box body at one side edge of the door body, and a sealing magnetic stripe with certain elasticity is fixed on the inner surface of the door body at a position corresponding to the door frame; when the door body is in a closed state, the sealing magnetic stripe can generate magnetic attraction with the door frame, so that the sealing magnetic stripe is tightly pressed on the surface of the door frame; the door body is also provided with a door handle, and the sealing magnetic strip is constructed so that the magnetic attraction force generated on average in unit length is smaller on the part relatively close to the door handle than on the part relatively far away from the door handle;
the structure of the sealing magnetic stripe comprises an elastic strip, and a magnetic substance is embedded in the elastic strip;
if the magnetic substance is magnetic particles, the elastic strip is of a hollow/hollowed structure or is provided with blind holes/through holes/gaps/cut edges along the length direction of the elastic strip and is close to the door handle; or, the distribution of the magnetic particles is sparse compared to a portion relatively far from the door handle;
if the magnetic substance is a magnetic strip,
the magnetic strip has a smaller average cross-sectional area at a portion near the door handle than at a portion relatively far from the door handle; or, the magnetic strip is provided with a notch at a part close to the door handle, the notch comprises a first notch and a second notch, the first notch is arranged on a first side wall of the magnetic strip, the second notch is arranged on a second side wall of the magnetic strip, the first side wall and the second side wall are two opposite side walls of the magnetic strip, and the first notch and the second notch are arranged in a staggered manner along the length direction of the magnetic strip;
if the magnetic strips are uniform in thickness, one or two or more sections of the magnetic strips are missing at the part close to the door handle;
if the magnetic strip comprises both relatively strong and relatively weak magnetic materials, the magnetic strip is disposed adjacent the door handle with the relatively weak magnetic material and is disposed away from the door handle with the relatively strong magnetic material.
2. The refrigerator of claim 1, wherein the first and second indentations extend through the magnetic strip in a thickness direction of the magnetic strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711468668.9A CN108180693B (en) | 2017-12-27 | 2017-12-27 | A kind of refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711468668.9A CN108180693B (en) | 2017-12-27 | 2017-12-27 | A kind of refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108180693A CN108180693A (en) | 2018-06-19 |
| CN108180693B true CN108180693B (en) | 2020-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711468668.9A Active CN108180693B (en) | 2017-12-27 | 2017-12-27 | A kind of refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108180693B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112797712A (en) * | 2020-12-30 | 2021-05-14 | 长虹美菱股份有限公司 | Refrigerator door body |
| CN115406171B (en) * | 2021-05-28 | 2024-01-12 | 青岛海尔特种电冰柜有限公司 | Door body assembly and refrigerator with same |
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| JP2944816B2 (en) * | 1992-03-23 | 1999-09-06 | 株式会社東芝 | Storage door open / close detector |
| CN101149206A (en) * | 2006-09-19 | 2008-03-26 | 三星电子株式会社 | Refrigerator and door opening apparatus thereof |
| DE202012011469U1 (en) * | 2012-11-29 | 2012-12-20 | Lutz Eckner | Opening aid for refrigeration appliances with permanent magnet door seal |
| CN104613717A (en) * | 2015-03-02 | 2015-05-13 | 周午贤 | Energy-saving easy-to-open fridge |
| CN106500429A (en) * | 2016-12-28 | 2017-03-15 | 宜兴众创空间科技发展有限公司 | A kind of device for food pack storage |
| CN107525339A (en) * | 2017-09-27 | 2017-12-29 | 海信容声(广东)冷柜有限公司 | Magnetic stripe, cold storage plant door seal and cold storage plant in a kind of cold storage plant door seal |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2231319C (en) * | 1998-03-05 | 2004-07-06 | Les Jeziorowski | Refrigerator door seal assembly |
| JP3868618B2 (en) * | 1998-03-06 | 2007-01-17 | ホシザキ電機株式会社 | Storage |
| DE102008054417A1 (en) * | 2008-12-09 | 2010-06-10 | BSH Bosch und Siemens Hausgeräte GmbH | Refrigerating appliance, in particular household freezer |
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- 2017-12-27 CN CN201711468668.9A patent/CN108180693B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2944816B2 (en) * | 1992-03-23 | 1999-09-06 | 株式会社東芝 | Storage door open / close detector |
| CN101149206A (en) * | 2006-09-19 | 2008-03-26 | 三星电子株式会社 | Refrigerator and door opening apparatus thereof |
| DE202012011469U1 (en) * | 2012-11-29 | 2012-12-20 | Lutz Eckner | Opening aid for refrigeration appliances with permanent magnet door seal |
| CN104613717A (en) * | 2015-03-02 | 2015-05-13 | 周午贤 | Energy-saving easy-to-open fridge |
| CN106500429A (en) * | 2016-12-28 | 2017-03-15 | 宜兴众创空间科技发展有限公司 | A kind of device for food pack storage |
| CN107525339A (en) * | 2017-09-27 | 2017-12-29 | 海信容声(广东)冷柜有限公司 | Magnetic stripe, cold storage plant door seal and cold storage plant in a kind of cold storage plant door seal |
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| CN108180693A (en) | 2018-06-19 |
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