CN114719492B - Refrigerator - Google Patents

Refrigerator Download PDF

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Publication number
CN114719492B
CN114719492B CN202110009044.0A CN202110009044A CN114719492B CN 114719492 B CN114719492 B CN 114719492B CN 202110009044 A CN202110009044 A CN 202110009044A CN 114719492 B CN114719492 B CN 114719492B
Authority
CN
China
Prior art keywords
wall
sealing
door
door body
permanent magnet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202110009044.0A
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Chinese (zh)
Other versions
CN114719492A (en
Inventor
胡梁
赵晓军
刘畅
肖长亮
许粤海
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hisense Ronshen Guangdong Freezer Co Ltd
Qingdao Hisense Commercial Cold Chain Co Ltd
Original Assignee
Hisense Ronshen Guangdong Freezer Co Ltd
Qingdao Hisense Commercial Cold Chain Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hisense Ronshen Guangdong Freezer Co Ltd, Qingdao Hisense Commercial Cold Chain Co Ltd filed Critical Hisense Ronshen Guangdong Freezer Co Ltd
Priority to CN202110009044.0A priority Critical patent/CN114719492B/en
Publication of CN114719492A publication Critical patent/CN114719492A/en
Application granted granted Critical
Publication of CN114719492B publication Critical patent/CN114719492B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • 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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • 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
    • 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
    • F25D23/06—Walls
    • 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
    • F25D29/00—Arrangement or mounting of control or safety devices

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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 provides a refrigerator, which comprises a refrigerator body with a taking and placing opening, a door body for opening or closing the taking and placing opening, a door sealing strip and an air leakage unit; the door sealing strip comprises a fixing part connected with one of the door body and the cabinet body and a sealing part with a sealing cavity; the air leakage unit comprises a permanent magnet arranged in the sealed cavity and positioned at one end of the sealed cavity far away from the fixed part, and an electromagnet which is arranged on the cabinet body or the door body far away from the fixed part and corresponds to the position of the permanent magnet in the door seal; the electromagnet comprises an iron core; when the door body is closed for refrigeration, the electromagnet is powered off, the permanent magnet is attracted with the iron core, and the door body and the cabinet body are in sealing fit through the door sealing strip, so that the heat preservation effect is ensured; when the door body is opened, the permanent magnet moves to the side far away from the electromagnet when the electromagnet is electrified, the sealing cavity is compressed, and the region on the sealing part corresponding to the position of the permanent magnet is separated from the cabinet body or the door body far away from the fixing part to form a ventilation channel so as to quickly reach air pressure balance and facilitate door opening.

Description

Refrigerator
Technical Field
The invention belongs to the technical field of refrigeration devices, and particularly relates to a refrigerator.
Background
The existing refrigerator is generally sealed through a door sealing strip, waste caused by escape of internal cold air is prevented, meanwhile, the refrigerating environment is guaranteed, the sealing mode can ensure that the internal cold air cannot escape, but after the refrigerator works for a long time, the internal air temperature is low, the air pressure becomes low, and particularly when the internal temperature of the refrigerator is reduced from high in a sealing state, the internal and external air pressure difference is large, and a user can hardly open the refrigerator door.
In view of this, the present invention has been proposed.
Disclosure of Invention
The invention provides a refrigerator aiming at the technical problems.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a refrigerator, comprising:
a cabinet defining a freezer compartment having a pick-and-place opening;
the door body is arranged on the cabinet body and is used for opening or closing the taking and placing opening;
the door seal comprises a fixed part connected with one of the door body and the cabinet body and a sealing part with a sealing cavity;
a venting unit, comprising:
the permanent magnet is arranged in the sealed cavity and is positioned at one end of the sealed cavity away from the fixing part;
the electromagnet is arranged on the cabinet body or the door body far away from the fixing part, and the electromagnet corresponds to the permanent magnet in the door seal; the electromagnet comprises an iron core and a coil wound around the iron core;
when the electromagnet is powered off, the permanent magnet is attracted with the iron core, and the door body is in sealing fit with the cabinet body through the door sealing strip;
when the electromagnet is electrified, the permanent magnet moves to one side far away from the electromagnet, the permanent magnet compresses the sealing cavity, and the area on the sealing part corresponding to the position of the permanent magnet is separated from the cabinet body or the door body far away from the fixing part to form a ventilation channel.
Preferably, a plurality of permanent magnets are arranged at intervals, and a plurality of electromagnets are in one-to-one correspondence with the permanent magnets.
Preferably, a plurality of electromagnets are connected in parallel and then connected in series with a control switch for controlling the on/off of the electromagnets.
Preferably, the control switch comprises an upper control switch arranged on the upper part of the cabinet body and a lower control switch arranged on the lower part of the cabinet body, and the upper control switch and the lower control switch are arranged in parallel.
Preferably, the control switch is a self-resetting switch.
Preferably, the door body is provided with an annular butt joint wall, a mounting groove is formed in an area, corresponding to the butt joint wall, of the door body, the fixing part of the door seal is mounted in the mounting groove, and the sealing part is exposed out of the mounting groove.
Preferably, an annular convex ring is formed on the inner side of the butt joint wall of the door body, and an inner container is arranged on the inner periphery of the convex ring;
when the door body is closed, the upper end face of the door body is taken as a reference surface, and the distance between the butt joint wall and the reference surface is recorded as D 1 The distance between the end surface of the convex ring far away from the reference surface and the reference surface is marked as D 2 The distance between the end surface of the inner container far away from the reference surface and the reference surface is marked as D 3 The method comprises the steps of carrying out a first treatment on the surface of the Wherein D is 1 ＜D 2 ＜D 3 。
Preferably, the cabinet body is provided with a sealing wall surrounding the taking and placing opening; an installation table recessed towards the inside of the cabinet body is formed on the inner side of the sealing wall of the cabinet body;
when the door body is closed, the butt joint wall and the convex ring on the door body correspond to the sealing wall on the cabinet body, and the liner is matched with the mounting table; a gap is defined between the convex ring and the sealing wall, and the sealing part of the door seal strip is matched with the sealing wall.
Preferably, a first inner extension strip is arranged at one end, close to the fixing part, of the sealing part, and the first inner extension strip is connected with the outer side wall of the convex ring.
Preferably, a second inner extension strip is arranged at one end, far away from the fixing part, of the sealing part, and the second inner extension strip is obliquely oriented to one side, close to the fixing part, of the sealing part;
when the door body is closed, the second inner extension strip is positioned in a gap defined by the convex ring and the sealing wall of the cabinet body and obliquely faces the convex ring.
Compared with the prior art, the invention has the advantages and positive effects that:
the invention provides a refrigerator, which comprises a refrigerator body, a door sealing strip and an air leakage unit, wherein the refrigerator body is used for defining a freezing compartment with a taking and placing opening; the door sealing strip comprises a fixing part connected with one of the door body and the cabinet body and a sealing part with a sealing cavity; the air leakage unit comprises a permanent magnet arranged in the sealed cavity and positioned at one end of the sealed cavity far away from the fixed part, and an electromagnet which is arranged on the cabinet body or the door body far away from the fixed part and corresponds to the position of the permanent magnet in the door seal; the electromagnet comprises an iron core and a coil wound around the iron core; when the door body is closed for refrigeration, the electromagnet is powered off, the permanent magnet is attracted with the iron core, and the door body and the cabinet body are in sealing fit through the door sealing strip, so that sealing and heat preservation effects are ensured; when the door body is opened, the permanent magnet moves to the side far away from the electromagnet when the electromagnet is electrified, the permanent magnet compresses the sealing cavity, and the region on the sealing part corresponding to the position of the permanent magnet is separated from the cabinet body or the door body far away from the fixing part to form a ventilation channel, so that air pressure balance is achieved quickly, and the door is opened conveniently.
Drawings
Fig. 1 is a schematic view of an exploded construction of a refrigerator according to the present invention;
FIG. 2 is a partial cross-sectional view of the refrigerator of the present invention;
FIG. 3 is a schematic view of a partial structure of the refrigerator of the present invention;
FIG. 4 is a cross-sectional view of a door seal of the refrigerator of the present invention;
fig. 5 is a schematic diagram of an assembly structure of a door seal and a permanent magnet of the refrigerator of the present invention;
fig. 6 is a schematic view of a partial structure of the refrigerator of the present invention when the door is closed;
FIG. 7 is an enlarged view of area A of FIG. 6;
fig. 8 is a schematic view of a partial structure of the refrigerator of the present invention when the door is opened;
FIG. 9 is an enlarged view of area B of FIG. 8;
fig. 10 is a partial sectional view of an inventive refrigerator;
fig. 11 is a schematic diagram of the circuit arrangement of the refrigerator of the present invention.
In the above figures:
a cabinet 10; a pick-and-place port 11; a freezer compartment 12; a door body 13; a butt wall 14; a mounting groove 15; a sealing wall 16; a mounting table 17; a convex ring 18; an inner container 19; a door seal 1; a fixing part 2; a first fixed wall 21; a second fixed wall 22; a third fixed wall 23; a fourth fixed wall 24; a first mounting edge 25; a second mounting edge 26; a sealing part 3; a first connecting wall 31; a second connecting wall 32; a first side wall 41; a second sidewall 42; a third connecting wall 33; a fourth connecting wall 34; a third sidewall 43; a fourth sidewall 44; a first inner wall 35; an arcuate inner wall 36; a first subchamber 37; a second subchamber 38; a third subchamber 39; a first outer extension strip 51; a second outer extension strip 52; a first inner extension strip 53; a second inner extension strip 54; a permanent magnet 6; an electromagnet 7; an upper control switch 81; and a lower control switch 82.
Detailed Description
The present invention will be further described with reference to specific examples so that those skilled in the art may better understand the present invention and practice it, but the scope of the present invention is not limited to the scope described in the specific embodiments. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be arbitrarily combined with each other.
It should be noted that the description of "first", "second", etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implying an indication of the number of technical features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.
In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
A refrigerator, as shown in fig. 1-11, comprises a cabinet 10, wherein the cabinet 10 defines a freezing compartment 12 with a taking and placing opening 11; wherein the freezer compartment 12 is used for storing items to be frozen. The cabinet body 10 is provided with a door body 13 for opening or closing the taking and placing opening 11. In this embodiment, the cabinet body 10 is in a cuboid shape, and the taking and placing opening 11 is formed above the cabinet body 10; the door body 13 is rotatably arranged on the cabinet body 10; when the door body 13 is opened, the freezing compartment 12 is communicated with the outside through the taking and placing opening 11, and a user takes and places articles through the taking and placing opening 11; when the door body 13 is closed, the door body 13 closes the taking and placing opening 11 to isolate the inside and the outside of the refrigerator.
A door seal 1 is arranged between the cabinet body 10 and the door body 13 to ensure the tightness of the freezing compartment 12 when the door body 13 is closed; specifically, the door seal 1 is formed by extrusion molding a deformable soft PVC material.
The door seal 1 comprises a fixed part 2 and a sealing part 3; the fixing part 2 is used for fixing the door body 13 or the cabinet body 10, and the sealing part 3 is used for filling a gap between the door body 13 and the cabinet body 10 when the door body 13 is closed under compression deformation.
Specifically, in this embodiment, as shown in fig. 4 to 10, an annular butt wall 14 is provided on the door 13, and a mounting groove 15 is provided in a region of the door 13 corresponding to the butt wall 14; the fixing portion 2 of the door seal 1 is fitted into the fitting groove 15, and the sealing portion 3 is exposed to the fitting groove 15. An annular convex ring 18 is formed on the inner side of the butt joint wall 14 of the door body 13, and an inner container 19 protruding into the refrigerator is arranged at the position of the inner periphery of the convex ring 18 corresponding to the taking and placing opening 11. When the door body 13 is closed, the upper end surface of the door body 13 is a reference surface, and the distance between the abutting wall 14 and the reference surface is denoted as D 1 The distance between the lower end surface (the end surface far from the reference) of the convex ring 18 and the reference surface is denoted as D 2 The distance between the lower end surface (end surface far from the reference) of the liner 19 and the reference surface is denoted as D 3 ，D 1 ＜D 2 ＜D 3 。
The cabinet body 10 is provided with a sealing wall 16 surrounding the taking and placing opening 11; a mounting table 17 recessed toward the inside of the cabinet 10 is formed on the inner side of the sealing wall 16 of the cabinet 10; in this embodiment, the mounting base 17 is annular.
When the door body 13 is closed, the butt joint wall 14 and the convex ring 18 on the door body 13 correspond to the sealing wall 16 on the cabinet body 10, and the liner 19 is matched with the mounting table 17 on the cabinet body 10; wherein, the sealing part 3 of the door seal 1 is matched with the sealing wall 16, and a gap is defined between the convex ring 18 and the sealing wall 16; the door seal 1 is deformed under pressure and blocks the gap between the door body 13 and the cabinet body 10, so that cold air is prevented from escaping from the gap to the outside of the refrigerator. The arrangement of the inner container 19 and the convex ring 18 ensures that only the cold air in the area surrounded by the side surface of the inner container 19 and the side surface of the mounting table 17 can be contacted with the door seal strip 1 through the gap surrounded by the convex ring 18 and the sealing wall 16, thereby reducing the contact quantity of the cold air and the door seal strip 1, reducing the heat conduction quantity of the door seal strip 1 to the refrigerator, slowing down the temperature rise in the refrigerator and further reducing the starting frequency and the running time of the refrigerator.
As shown in fig. 4 to 5, the sealing portion 3 includes a first connecting wall 31 and a third connecting wall 33 disposed opposite to each other, and a second connecting wall 32 and a fourth connecting wall 34 disposed opposite to each other; wherein, the first connecting wall 31, the second connecting wall 32, the third connecting wall 33 and the fourth connecting wall 34 are connected end to end in sequence to form a sealed cavity. The length of the first connecting wall 31 is smaller than the length of the third connecting wall 33 in the cross section of the sealing portion 3, and the cross section of the sealing portion 3 is in a shape from narrow to wide in the direction from the first connecting wall 31 to the third connecting wall 33.
Specifically, the second connecting wall 32 includes a first side wall 41 and a second side wall 42 connected, and the fourth connecting wall 34 includes a third side wall 43 and a fourth side wall 44 connected; the first connecting wall 31, the first side wall 41, the second side wall 42, the third connecting wall 33, the third side wall 43 and the fourth side wall 44 are sequentially connected end to form a sealed cavity. The first connecting wall 31 and the first side wall 41 form a dihedral angle alpha 1 E (90 °,180 °), the first sidewall 41 and the second sidewall 42 form a dihedral angle β 1 ∈[270°-α 1 180 °). The first connecting wall 31 and the fourth side wall 44 form a dihedral angle alpha 2 E (90 °,180 °), the fourth side wall 44 and the third side wall 43 form a dihedral angle β 2 ∈[270°-α 2 180 °). The arrangement enhances the sealing part 3 on the door body 13 and the cabinet 10, in particular along the direction from the fixed part 2 to the sealing part 3; namely, the sealing portion 3 is more resistant to the pressure in the direction from the fixing portion 2 to the sealing portion 3. In this embodiment, α 1 ＝α 2 ，β 1 ＝β 2 ＝270°-α 2 。
A first inner wall 35 and an arc-shaped inner wall 36 are arranged in the sealed cavity, wherein two sides of the arc-shaped inner wall 36 are connected with the third connecting wall 33; one end of the first inner wall 35 is connected with the arc-shaped inner wall 36, and the other end is connected with the first connecting wall 31; the sealed cavity is divided into a plurality of sealed subchambers by a first inner wall 35 and an arc-shaped inner wall 36; in this embodiment, the sealed sub-chambers are a first sub-chamber 37 defined by the arc-shaped inner wall 36 and the third connecting wall 33, a second sub-chamber 38 and a third sub-chamber 39 respectively located on two opposite sides of the first inner wall 35. The door seal 1 has better flexibility in one direction, and has bearing capacity in the other direction, especially along the direction from the fixed part 2 to the sealing part 3; namely, the sealing part 3 has stronger bearing capacity to the pressure along the direction from the fixed part 2 to the sealing part 3; in addition, the air is filled in the seal cavity, so that the heat conducted by the seal part 3 can be reduced.
The third connecting wall 33 of the sealing portion 3 is provided with a first outer extension strip 51 at one end thereof adjacent to the second connecting wall 32, the first outer extension strip 51 being inclined toward the side away from the fixing portion 2. In this embodiment, the door seal 1 is mounted on the door body 13, the first external extension strip 51 is disposed on the end surface of the sealing portion 3 away from the fixing portion 2 and near the external side, and the first external extension strip 51 is inclined toward the cabinet 10 side. When the door 13 is not firmly closed, the door seal 1 is not in contact with the sealing wall 16 sufficiently, the first external extension strip 51 can be in contact with the sealing wall 16 of the cabinet 10, so that the leakage of cold air between the inside and the outside is primarily isolated, and the leakage amount of the cold air is reduced.
The first connecting wall 31 of the sealing portion 3 is provided with a second outer extension strip 52 at one end thereof adjacent to the second connecting wall 32, the second outer extension strip 52 being inclined toward the side away from the sealing portion 3. In this embodiment, the door seal 1 is mounted on the door body 13, the second outer extension strip 52 is disposed on the end face of the sealing portion 3 contacting the fixing portion 2 and near the outer side, and the second outer extension strip 52 is obliquely oriented to the door body 13 and contacts the door body 13. The contact of the second outer extension strip 52 with the door body 13 reduces the contact of the outside air with the inside.
The fourth side wall 44 of the sealing part 3 is provided with a first inner extension strip 53, the first inner extension strip 53 facing away from the side of the second connecting wall 32. In this embodiment, the door seal 1 is mounted on the door body 13, the first inner extension strip 53 is disposed on one side of the sealing portion 3 near the inside, and the first inner extension strip 53 is connected to the outer side wall of the collar 18. The first inner extension strip 53 contacts with the outer side surface of the convex ring 18 to form a closed or small-opening cavity, the cold air in the refrigerator transfers the temperature to the first inner extension strip 53, then the temperature is transferred to the air in the cavity through the first inner extension strip 53, the air in the cavity is transferred to the sealing part 3 body, and finally the air is transferred to the outside through the sealing part 3 body, so that the air is transferred for many times, the efficiency of each transfer is poor, and the heat exchange is reduced.
The fourth connecting wall 34 of the sealing part 3 is provided with a second inner extension strip 54 at one end near the third connecting wall 33, the second inner extension strip 54 being inclined towards the side near the fixing part 2. In this embodiment, the door seal 1 is mounted on the door body 13, the second inner extension strip 54 is disposed on the end surface of the sealing portion 3 away from the fixing portion 2 and near the inner side, and the second inner extension strip 54 is inclined toward the door body 13. When the door body 13 is closed, the second inner extension strip 54 is located between the convex ring 18 of the door body 13 and the sealing wall 16 of the cabinet body 10, due to the effect of the sealing part 3, the sealing part 3 is in sealing fit with the sealing wall 16, a gap exists between the convex ring 18 and the sealing wall 16, the second inner extension strip 54 obliquely faces the convex ring 18 of the door body 13 and contacts with the lower end face of the convex ring 18 to form a closed or small-opening cavity, cold air in the refrigerator and air in the refrigerator are firstly transferred to the second inner extension strip 54, then the air in the cavity is transferred to the first inner extension strip 53 or the sealing part 3 body through the second inner extension strip 54, and finally the air in the cavity is transferred to the outside through the sealing part 3 body, so that the transfer is required for a plurality of times, the efficiency of each transfer is poor, and the heat exchange is reduced.
The arrangement of the sealing part 3, the first outer extension strip 51, the second outer extension strip 52, the first inner extension strip 53 and the second inner extension strip 54 effectively reduces heat exchange on two opposite sides of the sealing part 3 and improves the heat insulation effect of the door sealing strip 1.
The fixing portion 2 is disposed on the first connecting wall 31 of the sealing portion 3, and includes a first fixing wall 21, a second fixing wall 22, a third fixing wall 23 and a fourth fixing wall 24 which are sequentially connected; wherein, one side of the first fixed wall 21 far from the second fixed wall 22 is connected with the first connecting wall 31, and one side of the fourth fixed wall 24 far from the third fixed wall 23 is connected with the first connecting wall 31; thus, the first fixing wall 21, the second fixing wall 22, the third fixing wall 23, the fourth fixing wall 24 and the first connecting wall 31 together define a fixing cavity. The cross section of the fixing portion 2 is in a shape from narrow to wide in the direction from the fixing portion 2 to the sealing portion 3. Wherein the second fixing wall 22 and the third fixing wall 23 form a dihedral angle gamma epsilon (0 DEG, 90 DEG), and the first fixing wall 21 and the first connecting wall 31 form a dihedral angle theta 1 =90°, the dihedral angle θ between the fourth fixed wall 24 and the first connecting wall 31 2 =90°. The arrangement ensures that the fixing part 2 has better flexibility and enhances the bearing capacity of the sealing part 3 between the door body 13 and the cabinet body 10, in particular the bearing capacity along the direction from the fixing part 2 to the sealing part 3; namely, the sealing portion 3 is more resistant to the pressure in the direction from the fixing portion 2 to the sealing portion 3.
The intersection of the second fixed wall 22 and the third fixed wall 23 is provided with a first installation edge 25 and a second installation edge 26, the first installation edge 25 is positioned on one side of the second fixed wall 22 away from the third fixed wall 23, the second installation edge 26 is positioned on one side of the third fixed wall 23 away from the second fixed wall 22, and the first installation edge 25 and the second installation edge 26 form a dihedral angle lambda epsilon (0 DEG, 90 DEG), and lambda > gamma. Namely, the first mounting edge 25 and the second mounting edge 26 form an arrow shape, and have a guiding function when the fixing part 2 is installed in the mounting groove 15; the fixing portion 2 is deeply inserted into the mounting groove 15, and air in the fixing cavity reduces the heat conduction amount of the door seal 1. In addition, the mounting groove 15 is tapered from the groove bottom to the groove opening, and the arrow-shaped fixing portion 2 is engaged, so that the fixing portion 2 mounted in the mounting groove 15 can be prevented from moving out of the mounting groove 15.
When the door body 13 is in a closed state, cold air in the refrigerator can exchange heat with normal-temperature air outside the refrigerator through the door seal 1, and external heat is transferred into the refrigerator through the door seal 1, so that the temperature of the air in the refrigerator rises and exceeds a preset temperature, and a refrigeration part of the refrigerator is started to reduce the temperature in the refrigerator.
As shown in fig. 1-3 and fig. 5-10, in this embodiment, the refrigerator is provided with an air leakage unit, and the air leakage unit includes a permanent magnet 6 and an electromagnet 7; wherein the permanent magnet 6 is arranged in the sealed cavity and is positioned at one end of the sealed cavity far away from the fixed part 2; the electromagnet 7 is arranged on the cabinet body 10 or the door body 13 far away from the fixed part 2, and the electromagnet 7 corresponds to the position of the permanent magnet 6 in the door seal 1.
Specifically, the permanent magnet 6 is provided in the first sub-chamber 37 of the sealing portion 3. The electromagnet 7 comprises an iron core and a coil wound on the iron core; wherein the central axis of the coil is perpendicular to the sealing wall 16, and the iron core is made of soft iron or silicon steel material with quick demagnetization. The permanent magnet 6 is arranged in the door seal 1, the electromagnet 7 is arranged in the cabinet body 10, so that the permanent magnet and the electromagnet 7 are invisible to the outside, and the original appearance of the product is maintained.
One of the door seal 1 and the electromagnet 7 is arranged on the door body 13, and the other is arranged on the cabinet body 10.
In the embodiment, the door seal 1 is arranged on the door body 13, and the sealing part 3 has strong bearing capacity along the direction from the fixed part 2 to the sealing part 3; an electromagnet 7 is arranged on the cabinet 10 in a region corresponding to the sealing wall 16 and corresponds to the position of the permanent magnet 6 on the door seal 1.
As shown in fig. 6 to 7, when the door body 13 is closed, the door seal 1 fixed on the door body 13 is attached to the sealing part 3 on the cabinet body 10; at this time, when the electromagnet 7 is powered off, the iron core is non-magnetic, and the permanent magnet 6 arranged in the door seal 1 is attracted to the iron core arranged on the cabinet body 10, so that the tightness of the door seal 1 is effectively enhanced.
As shown in fig. 8-9, when the door needs to be opened, the electromagnet 7 is electrified, the coil is electrified, the iron core generates magnetism, the polarity of the iron core is the same as that of the permanent magnet 6 in the door seal 1, the soft door seal 1 is driven by the permanent magnet 6 to jack up upwards according to the principle of repulsion with the magnetism, the permanent magnet 6 compresses and seals the cavity, the area on the sealing part 3 corresponding to the position of the permanent magnet 6 is separated from the cabinet 10 far away from the fixing part 2 to form a ventilation channel, and the outside air rapidly enters the box to balance the internal and external air pressure so as to facilitate the door opening. In the invention, when the permanent magnet 6 and the electromagnet 7 repel each other, only the area of the sealing part 3 corresponding to the position of the permanent magnet 6 is compressed and deformed under the action of repulsive force, but the whole door seal 1 is not driven to deform, and the part of the door seal 1, where the permanent magnet 6 is not arranged, is still in sealing fit with the sealing wall 16 of the cabinet 10. The area of the sealing part 3 corresponding to the position of the permanent magnet 6 comprises the area where the permanent magnet 6 overlaps the sealing part and the peripheral area thereof, because the peripheral area where the permanent magnet 6 overlaps the sealing part is driven to deform to a certain extent when the permanent magnet 6 drives the sealing part 3 to deform.
In this embodiment, the door seal 1 is disposed on the door body 13, and the electromagnet 7 is disposed on the cabinet body 10. In the process of closing the door body 13 and refrigerating the refrigerator, the permanent magnet 6 ensures that the tightness of the door body 13 and the refrigerator body 10 is further ensured under the action of the gravity of the permanent magnet and the suction force of the permanent magnet and the iron core, and the effectiveness of the tightness is directly determined by the position setting of the permanent magnet. When the door seal 1 is arranged on the cabinet body 10 and the electromagnet 7 is arranged on the door body 13, the attraction force between the permanent magnet 6 and the iron core needs to be ensured to be larger than the self gravity of the permanent magnet 6, so that the sealing failure between the door body 13 and the cabinet body 10 caused by the compression of the sealing cavity under the self gravity action of the permanent magnet 6 in the refrigerating process of the refrigerator when the door body 13 is closed is avoided. The door seal 1 is arranged on the door body 13 relative to the arrangement of the door seal 1 on the cabinet body 10, and the effectiveness of sealing is directly ensured by setting the position of the door seal 1 on the door body 13 without considering the magnitude relation of the attraction force between the permanent magnet 6 and the iron core relative to the self gravity of the permanent magnet 6.
As shown in fig. 10-11, in this embodiment, a plurality of permanent magnets 6 are disposed in the door seal 1, the cabinet 10 is provided with electromagnets 7 corresponding to the number of the permanent magnets 6, and the electromagnets 7 are in one-to-one correspondence with the positions of the permanent magnets 6. In the circuit arrangement, a plurality of electromagnets 7 are connected in parallel and then connected in series with a control switch for controlling the on/off of the electromagnets 7. According to the use habit and convenience of the user, an upper control switch 81 is arranged at the upper part of the cabinet body 10, and a lower control switch 82 is arranged at the lower part of the cabinet body 10; wherein, the upper control switch 81 is arranged in parallel with the lower control switch 82 and then connected in series with the plurality of electromagnets 7 after being connected in parallel. The upper control switch 81 and the lower control switch 82 provided above can independently control the energization or the de-energization of the electromagnet 7. The electromagnets 7 are arranged in parallel, and when part of the electromagnets are failed due to faults, the rest electromagnets 7 can still work normally.
It should be understood that the number and positions of the electromagnets 7 can be set according to actual requirements, and the magnetism is realized by switching on or off the coils, and the strength of the magnetism is controlled by the strength of current or the number of turns of the coils. When the electromagnets 7 are electrified, the total magnetic force generated by the interaction between the electromagnets 7 and the permanent magnets 6 is denoted as F Total magnetic force The weight of the permanent magnet 6 is denoted as G Permanent magnet The gravity of the door body 13 is denoted as G Door body . In this embodiment, the permanent magnet 6 is disposed on the door 13, G Permanent magnet ＜F Total magnetic force ≤G Door body 2; i.e. total magnetic force F Total magnetic force Enough to move the permanent magnet 6 upwards, but insufficient to open the door body 13, only the permanent magnet 6 drives the door seal 1 at the corresponding position to further compress the sealed cavity to form a ventilation channel to balance the internal and external air pressure. When the permanent magnet 6 is arranged on the cabinet 10, the requirement of F is also satisfied Total magnetic force ≤G Door body And/2, the sealed cavity is compressed to form a ventilation channel under the condition that the door 13 is not sufficiently opened so as to balance the internal and external air pressure.
In addition, the control switch adopts a self-resetting switch; the self-resetting switch is in a normally closed initial state, is opened under the action of external force, and is automatically powered off after being released, so that misoperation is avoided when the door body 13 is closed for refrigeration. In this embodiment, the control shape is a self-resetting push button switch.
In the invention, a permanent magnet 6 is arranged in a door seal 1, and an electromagnet 7 corresponding to the permanent magnet 6 is arranged on a cabinet body 10 or a door body 13 which is far away from a fixed part 2 of the door seal 1; according to the electromagnetic principle, when the door body 13 is closed, the electromagnet 7 is powered off, the electromagnet 7 and the permanent magnet 6 are attracted, the tightness is enhanced, and the freezing compartment 12 is not communicated with the outside; when the door body 13 is opened, the electromagnet 7 is electrified, and a ventilation channel is formed according to the principle of repulsion with magnetism so as to quickly reach air pressure balance; the arrangement ensures the sealing and heat preservation requirements of the refrigerator when the door body 13 is closed, and solves the problem that the air pressure difference exists between the inside and the outside of the freezing chamber 12 when the door is opened.
The present invention is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present invention without departing from the technical content of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims (10)

1. Freezer, characterized in that it includes:
a cabinet defining a freezer compartment having a pick-and-place opening;
the door body is arranged on the cabinet body and is used for opening or closing the taking and placing opening;
the door seal comprises a fixing part connected with the door body and a sealing part with a sealing cavity, wherein the fixing part is used for fixing the door body, and the sealing part is used for filling a gap between the door body and the cabinet body by compression deformation when the door body is closed;
the sealing part comprises a first connecting wall, a third connecting wall, a second connecting wall and a fourth connecting wall which are oppositely arranged; the first connecting wall is connected with the fixing part;
the second connecting wall comprises a first side wall and a second side wall which are connected, and the fourth connecting wall comprises a third side wall and a fourth side wall which are connected;
the first connecting wall and the first side wall form a dihedral angle alpha 1 E (90 degrees, 180 degrees), the first side wall and the second side wall form a dihedral angle beta 1 ∈[270°-α 1 180 °); the first connecting wall and the fourth side wall form a dihedral angle alpha 2 E (90 degrees, 180 degrees), the fourth side wall and the third side wall form a dihedral angle beta 2 ∈[270°-α 2 ，180°)；
The first connecting wall, the first side wall, the second side wall, the third connecting wall, the third side wall and the fourth side wall are sequentially connected end to form a sealed cavity;
a first inner wall and an arc-shaped inner wall are arranged in the sealed cavity, and two sides of the arc-shaped inner wall are connected with a third connecting wall; one end of the first inner wall is connected with the arc-shaped inner wall, and the other end of the first inner wall is connected with the first connecting wall; the sealed cavity is divided into a plurality of sealed subchambers by the first inner wall and the arc-shaped inner wall; the sealing subchamber is a first subchamber, a second subchamber and a third subchamber, wherein the first subchamber, the second subchamber and the third subchamber are defined by the arc-shaped inner wall and the third connecting wall, and the second subchamber and the third subchamber are respectively arranged on two opposite sides of the first inner wall, so that the door sealing strip has good flexibility on one hand, and has pressure bearing capacity along the direction from the fixing part to the sealing part on the other hand;
a venting unit, comprising:
the permanent magnet is arranged in the first sub-cavity and is positioned at one end of the first sub-cavity far away from the first inner wall, and the first sub-cavity comprises a cavity arranged at the upper part of the permanent magnet;
the electromagnet is arranged on the cabinet body far away from the fixing part, and the electromagnet corresponds to the permanent magnet in the door seal; the electromagnet comprises an iron core and a coil wound around the iron core;
when the electromagnet is powered off, the permanent magnet is attracted with the iron core, and the door body is in sealing fit with the cabinet body through the door sealing strip;
when the electromagnet is electrified, the permanent magnet moves to one side far away from the electromagnet, the permanent magnet compresses the sealing cavity, and the area on the sealing part corresponding to the position of the permanent magnet is separated from the cabinet body far away from the fixing part to form a ventilation channel.
2. The refrigerator according to claim 1, wherein: the permanent magnets are arranged at intervals, and the electromagnets are in one-to-one correspondence with the permanent magnets.
3. The refrigerator according to claim 2, wherein: the electromagnets are connected in parallel and then connected in series with a control switch for controlling the on and off of the electromagnets.
4. A refrigerator according to claim 3, wherein: the control switch comprises an upper control switch arranged on the upper part of the cabinet body and a lower control switch arranged on the lower part of the cabinet body, and the upper control switch and the lower control switch are arranged in parallel.
5. The refrigerator of claim 4, wherein: the control switch is a self-resetting switch.
6. The refrigerator according to any one of claims 1-5, wherein: the door body is provided with an annular butt joint wall, a mounting groove is formed in an area, corresponding to the butt joint wall, of the door body, the fixing portion of the door seal is mounted in the mounting groove, and the sealing portion is exposed out of the mounting groove.
7. The refrigerator of claim 6, wherein: an annular convex ring is formed on the inner side of the butt joint wall of the door body, and an inner container is arranged on the inner periphery of the convex ring;
when the door body is closed, the upper end face of the door body is taken as a reference surface, and the distance between the butt joint wall and the reference surface is recorded as D 1 The distance between the end surface of the convex ring far away from the reference surface and the reference surface is marked as D 2 The distance between the end surface of the inner container far away from the reference surface and the reference surface is marked as D 3 The method comprises the steps of carrying out a first treatment on the surface of the Wherein D is 1 ＜D 2 ＜D 3 。
8. The refrigerator of claim 7, wherein: the cabinet body is provided with a sealing wall surrounding the taking and placing opening; an installation table recessed towards the inside of the cabinet body is formed on the inner side of the sealing wall of the cabinet body;
when the door body is closed, the butt joint wall and the convex ring on the door body correspond to the sealing wall on the cabinet body, and the liner is matched with the mounting table; a gap is defined between the convex ring and the sealing wall, and the sealing part of the door seal strip is matched with the sealing wall.
9. The cooler according to claim 8, wherein: and a first inner extension strip is arranged at one end, close to the fixing part, of the sealing part, and the first inner extension strip is connected with the outer side wall of the convex ring.
10. The refrigerator of claim 9, wherein: a second inner extension strip is arranged at one end, far away from the fixed part, of the sealing part, and the second inner extension strip is obliquely oriented to one side, close to the fixed part;
when the door body is closed, the second inner extension strip is positioned in a gap defined by the convex ring and the sealing wall of the cabinet body and obliquely faces the convex ring.
CN202110009044.0A 2021-01-05 2021-01-05 Refrigerator Active CN114719492B (en)

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Application Number Priority Date Filing Date Title
CN202110009044.0A CN114719492B (en) 2021-01-05 2021-01-05 Refrigerator

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Application Number Priority Date Filing Date Title
CN202110009044.0A CN114719492B (en) 2021-01-05 2021-01-05 Refrigerator

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CN114719492A CN114719492A (en) 2022-07-08
CN114719492B true CN114719492B (en) 2024-03-22

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04126987A (en) * 1990-09-19 1992-04-27 Sanyo Electric Co Ltd Refrigerator
CN206369390U (en) * 2016-12-19 2017-08-01 江苏白雪电器股份有限公司 Refrigerator
CN109282565A (en) * 2018-09-10 2019-01-29 耿声俊 A kind of refrigerator door that magnetism is controllable
CN110595132A (en) * 2019-09-27 2019-12-20 宁波韩电电器有限公司 Embedded energy-conserving antibacterial freezer
CN111096573A (en) * 2018-10-26 2020-05-05 青岛海尔特种电冰柜有限公司 Wine cabinet and door opening and closing control method
CN111486640A (en) * 2020-04-23 2020-08-04 长虹美菱股份有限公司 Moisturizing air-cooled refrigerator and control method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04126987A (en) * 1990-09-19 1992-04-27 Sanyo Electric Co Ltd Refrigerator
CN206369390U (en) * 2016-12-19 2017-08-01 江苏白雪电器股份有限公司 Refrigerator
CN109282565A (en) * 2018-09-10 2019-01-29 耿声俊 A kind of refrigerator door that magnetism is controllable
CN111096573A (en) * 2018-10-26 2020-05-05 青岛海尔特种电冰柜有限公司 Wine cabinet and door opening and closing control method
CN110595132A (en) * 2019-09-27 2019-12-20 宁波韩电电器有限公司 Embedded energy-conserving antibacterial freezer
CN111486640A (en) * 2020-04-23 2020-08-04 长虹美菱股份有限公司 Moisturizing air-cooled refrigerator and control method thereof

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