CN109210848B

CN109210848B - Anti-negative-pressure tight-suction freezer

Info

Publication number: CN109210848B
Application number: CN201810785732.4A
Authority: CN
Inventors: 杨浩
Original assignee: Zhejiang Xinqier Electrical Technology Co ltd
Current assignee: Zhejiang xinqier Electrical Technology Co.,Ltd.
Priority date: 2018-07-17
Filing date: 2018-07-17
Publication date: 2020-09-11
Anticipated expiration: 2038-07-17
Also published as: CN109210848A

Abstract

The invention discloses a negative pressure tight-suction-preventing freezer which comprises a freezer body and a flip cover, wherein the lower side wall of the freezer body is provided with a roller, the flip cover is rotatably connected with the upper side wall of the freezer body, an insertion block is integrally formed on the lower side wall of the freezer body, an insertion groove matched with the insertion block in size and position is formed in the upper side wall of the freezer body, and a downward movement preventing mechanism is arranged at the inner bottom of the insertion groove. Has the advantages that: according to the invention, the magnetorheological fluid and the iron rod are arranged in the cabinet body, the energizing coil is arranged on the flip cover, the magnetorheological fluid is influenced by the magnetic field formed between the energizing coil and the iron rod, the flip cover is continuously moved downwards under the negative pressure environment condition, the magnetorheological fluid is changed from low fluidity to non-fluidity through the magnetic field, so that the flip cover is prevented from moving downwards, the negative pressure suction force is counteracted, the flip cover is prevented from being tightly sucked by the negative pressure, and the flip cover is convenient to open.

Description

Anti-negative-pressure tight-suction freezer

Technical Field

The invention relates to the technical field of freezers, in particular to a freezer capable of preventing negative pressure tight suction.

Background

The refrigerator, which is an apparatus for preserving articles by cooling air, generally comprises a cabinet body and a lid, and has a freezing chamber and a refrigerating chamber, and is widely used in homes or stores.

Because the inside of refrigerator-freezer realizes the cooling storage through gaseous cooling, when gaseous cooling, the gaseous volume shrink of the internal portion of cabinet, the internal negative pressure that forms of cabinet attracts flip to move down and makes between flip and the cabinet body paste each other tightly, needs very big power to carry out flip's pull-up when carrying out flip's opening, just can pull up flip, trouble very.

Therefore, we propose an anti-negative pressure suction ice chest to solve the above problems.

Disclosure of Invention

The invention aims to solve the problems in the background art and provides a negative pressure tight-suction prevention ice chest.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a prevent tight refrigerator-freezer of negative pressure suction, includes that the lateral wall is equipped with the cabinet body of gyro wheel and rotates the flip of being connected with the lateral wall on the cabinet body down, the lower lateral wall integrated into one piece of the cabinet body has the inserted block, the last lateral wall of the cabinet body be equipped with the inserted block size position assorted slot, the interior bottom of slot is equipped with prevents down moving mechanism.

In foretell prevent that negative pressure inhales tight refrigerator-freezer, prevent moving down the mechanism include with the slot in bottom fixed connection have a T type pipe, the vertical iron bar that sets up of T type intraductal fixedly connected with, sliding connection has the slide on the outer wall of iron bar, the outer wall of slide and the inner wall relative sliding connection of T type pipe, the inside packing of T type pipe has magnetorheological suspensions, two last lateral wall fixedly connected with connecting rods of slide, two the upper end of connecting rod all runs through the last lateral wall of T type pipe and extends to the outside of T type pipe and is connected with the limiting plate, the lower lateral wall of inserted block seted up with the protruding end size position assorted recess of T type pipe, the internally mounted of inserted block has electrical coil, electrical coil is located the outside of recess.

In foretell prevent that negative pressure inhales tight refrigerator-freezer, two mounting grooves have been seted up to the inside of the cabinet body, two the mounting groove is located the both sides of slot, every all install the gasbag in the mounting groove, every equal sliding connection has a sliding plate on the inner wall of gasbag, two the equal fixedly connected with carriage release lever in one side that the sliding plate is close to the slot, every the one end that the sliding plate was kept away from to the carriage release lever all runs through the mounting groove, the lateral wall of slot and T type pipe and extends to the inside and the fixedly connected with movable plate of T type pipe, every the outer wall of movable plate all with the inner wall sliding connection of T type pipe, magnetorheological suspensions is located the lower lateral wall of slide and two movable plates and keeps away.

In the freezer capable of preventing negative pressure tight suction, the inner wall of the T-shaped pipe is provided with two filter screens, and the two filter screens are positioned on the inner sides of the two moving plates.

In the anti-negative-pressure tight-suction freezer, the outer walls of the sliding plate, the sliding plate and the moving plate are all sleeved with sliding sealing rings.

In the above-mentioned prevent negative pressure and inhale tight refrigerator-freezer, prevent that the mechanism moves down including seting up the draw-in groove at the cabinet body upper side wall, flip's lower lateral wall is equipped with the fixture block with draw-in groove size position assorted, the inside of fixture block is provided with the permanent magnet, the interior diapire fixedly connected with installation piece of draw-in groove, the inside of installation piece is provided with the electro-magnet.

In the anti-negative-pressure tight-suction freezer, a switch is mounted on the outer wall of the freezer body, the electromagnet is connected with the switch through a wire, and the switch is connected with an external power supply through a wire.

Compared with the prior art, this prevent that negative pressure inhales tight refrigerator-freezer stable in structure, design scientific and reasonable, specific advantage lies in:

1. the magnetic field between the electrified coil and the iron rod influences the magnetorheological fluid, the magnetorheological fluid is changed from fluidity to non-fluidity to block the sliding plate from moving downwards, and meanwhile, the sliding plate has upward resistance to the sliding plate, negative pressure suction force caused by low temperature of the cabinet body is offset to a certain extent, and the opening of the turnover cover is facilitated;

2. the magnetorheological fluid is moved towards two sides through the filter screen to extrude the sliding plate, the connecting rod and the moving plate to move when the sliding plate moves downwards, the sliding plate extrudes gas in the air bag, when the magnetorheological fluid is converted into a non-flowing state, the magnetorheological fluid does not pass through the filter screen, so that upward resistance is formed, when the flip cover rotates, the magnetorheological fluid is recovered, the gas contracted in the air bag is recovered to push the moving plate and the sliding plate to move, and the magnetorheological fluid is recovered to an original state;

3. the sliding sealing rings are arranged on the sliding plate, the sliding plate and the moving plate, so that gas leakage in the magnetorheological fluid and the air bag is avoided, and the normal operation of the downward movement prevention mechanism is ensured.

In summary, the magnetorheological fluid and the iron rod are arranged in the cabinet body, the turning cover is provided with the electrified coil, the magnetorheological fluid is influenced by the magnetic field formed between the electrified coil and the iron rod, the turning cover is continuously moved downwards under the negative pressure environment condition, the magnetorheological fluid is changed from low fluidity to non-fluidity through the magnetic field, so that the turning cover is prevented from moving downwards, the negative pressure suction force is counteracted, the turning cover is prevented from being tightly sucked by the negative pressure, and the turning cover is convenient to open.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 2 is an enlarged view of part A of the mechanism according to the first embodiment of the present invention;

fig. 3 is a schematic structural diagram of a second embodiment of the present invention.

In the figure: the magnetorheological fluid filtering device comprises a cabinet body 1, a turnover cover 2, slots 3, an insertion block 4, a T-shaped pipe 5, a groove 6, an electrified coil 7, an iron rod 8, a sliding plate 9, a connecting rod 10, a limiting plate 11, magnetorheological fluid 12, a filter screen 13, mounting grooves 14, air bags 15, a sliding plate 16, a movable rod 17, a movable plate 18, a clamping block 19, a permanent magnet 20, clamping grooves 21, a mounting block 22, an electromagnet 23 and a switch 24.

Detailed Description

The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

The first embodiment is as follows:

referring to fig. 1-2, a negative pressure tight-suction preventing freezer comprises a freezer body 1 with rollers arranged on the lower side wall and a flip cover 2 rotatably connected with the upper side wall of the freezer body 1, wherein an insertion block 4 is integrally formed on the lower side wall of the freezer body 1, a slot 3 matched with the insertion block 4 in size and position is arranged on the upper side wall of the freezer body 1, the insertion block 4 can be accurately inserted into the slot 3, and a downward movement preventing mechanism is arranged at the inner bottom of the slot 3.

The downward movement preventing mechanism comprises a T-shaped pipe 5 fixedly connected with the bottom in the slot 3, a vertically arranged iron rod 8 is fixedly connected in the T-shaped pipe 5, a sliding plate 9 is connected to the outer wall of the iron rod 8 in a sliding manner, the outer wall of the sliding plate 9 is in relative sliding connection with the inner wall of the T-shaped pipe 5, magnetorheological fluid 12 is filled in the T-shaped pipe 5, the magnetorheological fluid 12 belongs to controllable fluid and is an active part in research in intelligent materials, the magnetorheological fluid 12 is a suspension formed by mixing small soft magnetic particles with high magnetic conductivity and low magnetic hysteresis and non-conductive magnetic liquid, and the suspension presents the characteristics of low-viscosity and high-fluidity Newtonian fluid under the condition of a zero magnetic field; under the action of a strong magnetic field, the magnetorheological fluid has the characteristics of high viscosity and low fluidity, the rheological behavior of the magnetorheological fluid 12 under the action of the magnetic field is instantaneous and reversible, and the magnetorheological fluid has a stable corresponding relation with the magnetic field intensity, so that the magnetorheological fluid is an intelligent material with wide application and excellent performance.

The upper side wall of the sliding plate 9 is fixedly connected with two connecting rods 10, the upper ends of the two connecting rods 10 extend to the outside of the T-shaped pipe 5 through the upper side wall of the T-shaped pipe 5 and are connected with a limiting plate 11, the limiting plate 11 is arranged to prevent the connecting rods 10 from sliding into the T-shaped pipe 5, the lower side wall of the inserting block 4 is provided with a groove 6 matched with the protruding end of the T-shaped pipe 5 in size and position, the inserting block 4 is internally provided with an electrified coil 7, the electrified coil 7 is positioned on the outer side of the groove 6, an iron rod 8 can be magnetized by the electrified coil 7 in the T-shaped pipe 5, the size of a magnetic field is increased, the cabinet body 1 and the flip cover 2 in the freezer in the prior art are generally adsorbed and fixed by a magnetic sealing strip, the electrified coil 7 generates the magnetic field, when the inside of the cabinet body 1 works to cool air, the, the extrusion limit plate 11 and the connecting rod 1 move downwards, and the magnetorheological fluid 12 is extruded to flow towards two sides by the downward movement of the sliding plate 9.

Two mounting grooves 14 are formed in the cabinet body 1, the two mounting grooves 14 are located on two sides of the slot 3, an air bag 15 is mounted in each mounting groove 14, a sliding plate 16 is connected to the inner wall of each air bag 15 in a sliding manner, a moving rod 17 is fixedly connected to one side of each sliding plate 16 close to the slot 3, one end of each moving rod 17 far away from the sliding plate 16 penetrates through the mounting grooves 14, the slot 3 and the side wall of the T-shaped pipe 5 to extend into the T-shaped pipe 5 and is fixedly connected with a moving plate 18, the outer wall of each moving plate 18 is connected with the inner wall of the T-shaped pipe 5 in a sliding manner, and sliding seal rings are sleeved on the outer walls of the sliding, the sliding seal ring is arranged to avoid the phenomenon that the magnetorheological fluid 12 overflows to the upper side of the sliding plate 9 and the side of the moving plate 18 close to the air bag 15 when the sliding plate 9 and the moving plate 18 slide in the T-shaped pipe 5.

The magnetorheological fluid 12 is positioned between the lower side wall of the sliding plate 9 and one side wall of the two movable plates 18 far away from the movable rod 17, two filter screens 13 are installed on the inner wall of the T-shaped pipe 5, the two filter screens 13 are positioned on the inner sides of the two movable plates 18, the filter screens 13 are arranged to facilitate the flow of the magnetorheological fluid 12, the flip cover 2 extrudes the sliding plate 9 to move downwards in a negative pressure environment caused by low temperature in the cabinet body 1, the magnetorheological fluid 12 flows towards two sides through the filter screens, the movable plates 18 are extruded to move, the sliding plate 16 slides in the air bag 15, the extrusion gas continuously moves downwards until the magnetic field between the magnetorheological coil 7 and the iron rod 8 is enough to influence the magnetorheological fluid 12, the magnetorheological fluid 12 is converted from a fluid state to a low-flow approximate solid state, the magnetorheological fluid 12 does not pass through the filter screens 13 any more, so as to block the sliding plate 9 from moving downwards, meanwhile, an upward, the flip cover 2 is convenient to open, when the flip cover 2 is turned, the magnetorheological fluid 12 is changed from low fluidity to high fluidity, the gas extruded in the air bag 15 pushes the sliding plate 16, the moving rod 17 and the moving plate 18 to move, and the magnetorheological fluid 12 flows through the filter screen 13 to restore the original state.

In this embodiment: the insert 4 caused by the negative pressure moves downwards, so that the magnetic field between the energized coil 7 and the iron rod 8 influences the magnetorheological fluid 12, the magnetorheological fluid 12 is changed from a high-fluidity state to a low-fluidity approximately solid state, the magnetorheological fluid 12 does not pass through the filter screen 13 any more, an upward resistance is provided for the sliding plate 9, the insert 4 is prevented from moving downwards, the absorption force caused by the negative pressure is counteracted, and the flip cover 2 is prevented from being tightly attached to the cabinet body 1.

Example two:

referring to fig. 3, a freezer against negative pressure tight suction comprises a freezer body 1 with rollers on the lower side wall and a flip cover 2 rotationally connected with the upper side wall of the freezer body 1, an insert block 4 is integrally formed on the lower side wall of the freezer body 1, a slot 3 matched with the insert block 4 in size and position is arranged on the upper side wall of the freezer body 1, and a downward movement preventing mechanism is arranged at the inner bottom of the slot 3.

The downward movement preventing mechanism comprises a clamping groove 21 formed in the upper side wall of the cabinet body 1, a clamping block 19 matched with the clamping groove 21 in size and position is arranged on the lower side wall of the flip cover 1, a permanent magnet 20 is arranged inside the clamping block 19, an installation block 22 is fixedly connected to the inner bottom wall of the clamping groove 21, an electromagnet 23 is arranged inside the installation block 22, a switch 24 is installed on the outer wall of the cabinet body 1, the electromagnet 23 is connected with the switch 24 through a wire, the switch 24 is connected with an external power supply through a wire, the switch 24 is pressed to enable the electromagnet 23 to generate magnetism, under the condition that the current flow direction is constant and the magnetism generated by the electromagnet 23 is opposite to that generated by the permanent magnet 20, when the flip cover 2 is tightly attracted to the upper side wall of the cabinet body 1 in a negative pressure environment, the flip cover 2 is enabled to be.

In this embodiment: the negative pressure suction force between the flip cover 2 and the cabinet body 1 is offset by the opposite magnetic force between the electrified electromagnet 23 and the permanent magnet 20, so that the flip cover 2 is convenient to turn.

Although the terms of the cabinet 1, the flip cover 2, the slot 3, the insert block 4, the T-shaped tube 5, the groove 6, the energized coil 7, the iron rod 8, the sliding plate 9, the connecting rod 10, the limiting plate 11, the magnetorheological fluid 12, the filter screen 13, the mounting groove 14, the air bag 15, the sliding plate 16, the moving rod 17, the moving plate 18, the fixture block 19, the permanent magnet 20, the fixture groove 21, the mounting block 22, the electromagnet 23, the switch 24, etc. are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. A negative pressure tight-suction freezer comprises a freezer body (1) with rollers on the lower side wall and a flip cover (2) rotationally connected with the upper side wall of the freezer body (1), and is characterized in that an insertion block (4) is integrally formed on the lower side wall of the flip cover (2), an insertion groove (3) matched with the insertion block (4) in size and position is formed in the upper side wall of the freezer body (1), and a downward movement preventing mechanism is arranged at the inner bottom of the insertion groove (3); the downward movement preventing mechanism comprises a T-shaped pipe (5) fixedly connected with the bottom in the slot (3), an iron rod (8) vertically arranged is fixedly connected in the T-shaped pipe (5), a sliding plate (9) is slidably connected to the outer wall of the iron rod (8), the outer wall of the sliding plate (9) is in relative sliding connection with the inner wall of the T-shaped pipe (5), magnetorheological fluid (12) is filled in the T-shaped pipe (5), two connecting rods (10) are fixedly connected to the upper side wall of the sliding plate (9), the upper ends of the two connecting rods (10) extend to the outer part of the T-shaped pipe (5) through the upper side wall of the T-shaped pipe (5) and are connected with a limiting plate (11), a groove (6) matched with the size and position of the protruding end of the T-shaped pipe (5) is formed in the lower side wall of the insert block (4), and an energizing coil (7) is, the electrified coil (7) is positioned at the outer side of the groove (6).

2. The anti-negative-pressure tight-suction freezer according to claim 1, wherein two mounting grooves (14) are formed in the cabinet body (1), the two mounting grooves (14) are located on two sides of the slot (3), an air bag (15) is mounted in each mounting groove (14), a sliding plate (16) is slidably connected to the inner wall of each air bag (15), a moving rod (17) is fixedly connected to one side, close to the slot (3), of each sliding plate (16), one end, far away from the sliding plate (16), of each moving rod (17) extends to the inside of the T-shaped pipe (5) through the mounting grooves (14), the slot (3) and the side wall of the T-shaped pipe (5) and is fixedly connected with a moving plate (18), the outer wall of each moving plate (18) is slidably connected with the inner wall of the T-shaped pipe (5), the magnetorheological fluid (12) is located on the lower side wall of the sliding plate (9) and the two moving plates (18) are far away from the moving rods ( Between the side walls of the one side.

3. An anti-negative-pressure tight-suction freezer according to claim 2, characterized in that two screens (13) are mounted on the inner wall of the T-shaped tube (5), the two screens (13) being located inside the two moving plates (18).

4. The freezer cabinet of claim 3, wherein the outer walls of the slide plate (9), the slide plate (16) and the movable plate (18) are provided with sliding sealing rings.

5. The negative pressure tight-suction freezer according to claim 1, wherein the downward movement preventing mechanism comprises a clamping groove (21) formed in the upper side wall of the freezer body (1), a clamping block (19) matched with the clamping groove (21) in size and position is arranged on the lower side wall of the flip cover (2), a permanent magnet (20) is arranged inside the clamping block (19), a mounting block (22) is fixedly connected to the inner bottom wall of the clamping groove (21), and an electromagnet (23) is arranged inside the mounting block (22).

6. The anti-negative-pressure tight-suction freezer according to claim 5, wherein a switch (24) is mounted on the outer wall of the cabinet body (1), the electromagnet (23) is connected with the switch (24) through a wire, and the switch (24) is connected with an external power supply through a wire.