CN106885436B

CN106885436B - Refrigerating and freezing device and drawer assembly thereof

Info

Publication number: CN106885436B
Application number: CN201710132163.9A
Authority: CN
Inventors: 王晶; 张�浩; 朱小兵; 王胜飞
Original assignee: Haier Smart Home Co Ltd
Current assignee: Haier Smart Home Co Ltd
Priority date: 2017-03-07
Filing date: 2017-03-07
Publication date: 2023-09-22
Anticipated expiration: 2037-03-07
Also published as: CN106885436A

Abstract

The present invention relates to a refrigeration and freezer and drawer assembly therefor. The drawer assembly comprises a barrel with an open front side, a drawer capable of being inserted into the barrel in a front-back push-pull manner, and two sliding rail assemblies respectively arranged at two transverse ends of the interior of the barrel, wherein each sliding rail assembly comprises an outer rail and is fixed in the barrel in a front-back extending manner; the inner rail is arranged on the outer rail in a sliding way back and forth so as to be supported by the outer rail and fixed on the drawer; the lock disc is hinged to the rear end of the outer rail in a rotatable manner around a transverse axis, and a front clamping column and a rear clamping column which transversely protrude are arranged on the lock disc; the clamping head is arranged at the rear end of the inner rail and is provided with a protruding part protruding upwards or downwards, and in the process of pushing the drawer into the cylinder, the rear end of the protruding part abuts against the rear clamping column so as to push the lock disc to rotate until the front clamping column abuts against the front side of the protruding part, so that the inner rail and the drawer are locked; the elastic element is configured to apply a resisting moment to the lock disk when the boss pushes the lock disk to rotate, and to apply a torque opposite to the resisting moment to the lock disk when the front card post is abutted against the front side of the boss.

Description

Refrigerating and freezing device and drawer assembly thereof

Technical Field

The present invention relates to a refrigeration device, and more particularly, to a refrigeration and freezing device and a drawer assembly thereof.

Background

The drawer of a refrigeration and freezer is typically slidably disposed within a cartridge. With the increasing demand for fresh-keeping of foods, it is necessary to form a good seal between the front panel of the drawer and the opening of the drum after the drawer is completely pushed into the drum, that is, to make the front panel cling to the opening of the drum.

For this reason, the present refrigeration and freezing device has set up complicated mechanical or electromagnetic locking mechanism to locking drawer and barrel, but present locking mechanism or structure complicacy are difficult for making, or complex operation is difficult for controlling, or the cost is higher.

Disclosure of Invention

It is an object of the present invention to overcome at least one of the disadvantages of the prior art and to provide a novel drawer assembly in which a locking mechanism between a drawer and a barrel is simple and novel in structure, and which facilitates the operation of opening or closing the drawer by a user.

A further object of the invention is to vent the oxygen from the air inside the drawer, so as to obtain a nitrogen-rich and oxygen-depleted gas atmosphere which is beneficial to food preservation.

Another object of the present invention is to provide a refrigerating and freezing apparatus having the drawer assembly.

In one aspect, the present invention provides a drawer assembly for a refrigerating and freezing apparatus, including a drum having an opened front side, a drawer inserted into the drum to be pushed and pulled back and forth, and two rail assemblies respectively provided at both lateral ends of an inside of the drum, each rail assembly comprising:

an outer rail which is fixed in the cylinder body in a manner of extending along the front-back direction;

the inner rail is arranged on the outer rail in a front-back sliding way so as to be supported by the outer rail and is fixed on the drawer;

the lock disc is hinged to the rear end of the outer rail in a rotatable mode around a transverse axis, and a front clamping column and a rear clamping column which transversely protrude are arranged on the lock disc;

the clamping head is arranged at the rear end of the inner rail and is provided with a protruding part protruding upwards or downwards, and in the process that the drawer is pushed into the cylinder, the rear end of the protruding part abuts against the rear clamping column so as to push the lock disc to rotate until the front clamping column abuts against the front side of the protruding part, so that the inner rail and the drawer are locked; and

and the elastic element is configured to apply a resisting moment to the lock disc when the protruding part pushes the lock disc to rotate, and apply a torque opposite to the resisting moment to the lock disc when the front clamping column is abutted against the front side of the protruding part.

Optionally, the protruding portion protrudes downward from the chuck, and the front clamping post and the rear clamping post are located above the pivot shaft of the lock disc; the elastic element is a torsion spring, the two axial ends of the elastic element are respectively hinged to the outer rail and the lock disc, when the protruding part does not touch the rear clamping column, the hinge point between the torsion spring and the lock disc is positioned above the pivot shaft of the lock disc, and the elastic direction is forward; when the front clamping column is attached to the front side of the protruding portion, a hinge point between the torsion spring and the lock disc is located below a pivot shaft of the lock disc, and the elastic force direction is forward.

Optionally, each slide rail assembly further comprises: and the accelerating assembly is configured to enable the accelerating assembly traction chuck and the inner rail to accelerate and move backwards after the inner rail moves backwards and contacts the accelerating assembly.

Optionally, the acceleration assembly comprises: a sliding block which is arranged on the outer rail in a sliding way back and forth; a spring connecting the outer rail and the slider to apply a backward elastic force to the slider; the front end of the connecting rod extending forwards and backwards is rotatably connected with the sliding block along a transverse axis, and the rear end of the connecting rod is provided with a positioning column protruding transversely; the outer rail is provided with a sliding groove extending forwards and backwards, the top wall or the bottom wall of the sliding groove is provided with a concave bayonet, and when the protruding part does not touch the rear clamping column, one end of the positioning column is clamped into the bayonet, so that the sliding block cannot move backwards; and the clamping head is also provided with a guide groove with an opening which is backwards, forwards and upwards or downwards inclined from the back, and in the backward moving process of the clamping head, the other end of the positioning column enters the guide groove and is guided by the guide groove to rotate to be separated from the bayonet to enter the sliding groove, so that the sliding block moves backwards under the tensile force of the spring in an accelerating way, and the positioning column drives the clamping head to move backwards.

Optionally, the front end surface of the protruding portion is a slope surface, so that when the inner rail is in a locked state and moves forward, the front clamping column is separated from the protruding portion along the slope surface, and the inner rail is unlocked.

Optionally, the top wall of the cylinder is provided with a hollowed-out part for allowing air flow to enter and exit; and the drawer assembly further comprises: the housing is arranged outside the cylinder and is arranged on the top wall of the cylinder, and the housing seals the hollow part to jointly define a containing cavity with the top wall of the cylinder; the air-conditioning membrane assembly is arranged in the accommodating cavity, is provided with at least one air-conditioning membrane and an oxygen-enriched gas collecting cavity, and is configured to enable oxygen in the accommodating cavity to penetrate through the air-conditioning membrane more than nitrogen to enter the oxygen-enriched gas collecting cavity, so that an air-conditioning fresh-keeping space rich in nitrogen and lean in oxygen is formed inside the cylinder.

Optionally, the drawer assembly further comprises: the fan is arranged in the accommodating cavity and is positioned at one lateral side of the air-conditioning membrane assembly, so that air in the air-conditioning fresh-keeping space flows into the fan through one side of the hollow part, is blown to the air-conditioning membrane assembly by the fan, and flows back to the air-conditioning fresh-keeping space from the other side of the hollow part.

Optionally, a gap is provided between the top of the air-conditioning membrane assembly and the housing to allow air flow therethrough; the inner wall of the housing is provided with two air guide rib plates which are arranged at intervals, the two air guide rib plates are configured to define an air guide channel together with the housing and the top wall of the cylinder body, and two ends of the air guide channel face the air outlet of the fan and the air conditioning membrane assembly respectively.

Optionally, the air-conditioning membrane assembly further includes a support frame having a first surface and a second surface parallel to each other, and the support frame is formed with a plurality of air flow channels extending over the first surface and the second surface, respectively, and penetrating the support frame to communicate the first surface and the second surface, the plurality of air flow channels together forming an oxygen-enriched gas collection chamber; and the at least one air-conditioning film is two plane-shaped air-conditioning films which are respectively paved on the first surface and the second surface of the supporting frame.

In another aspect, the present invention also provides a refrigeration and freezer comprising a drawer assembly as described in any one of the above.

Optionally, the refrigeration and freezing device further comprises an air pumping device. The air extracting device is communicated with the oxygen-enriched gas collecting cavity of the air-conditioning membrane assembly of the drawer assembly 200 through a pipeline so as to extract the gas penetrating into the oxygen-enriched gas collecting cavity to the outside of the drawer assembly.

Optionally, the refrigeration and freezing device further comprises: a drawer position detection device configured to generate a drawer closing signal after the drawer is completely pushed into the barrel; the controller is electrically connected with the drawer position detection device, the fan and the air exhaust device and is configured to start the fan and the drawer device after receiving a drawer closing signal; and closing the fan and the drawer device when the drawer closing signal is not received.

According to the refrigerating and freezing device and the drawer assembly thereof, the inner rail and the outer rail are locked by the clamping head and the locking disc in the drawer pushing process, so that the drawer is automatically locked to the cylinder. The elasticity of the elastic element can provide locking pretightening force with a certain size for the drawer, and when a user opens the drawer again, the drawer can be opened only by overcoming the pretightening force, so that the drawer is very convenient to lock and unlock.

Furthermore, the refrigerating and freezing device and the drawer assembly thereof can pull the clamping head, the inner rail and the drawer to accelerate and move backwards through the accelerating assembly, so that the clamping head and the locking disc can be automatically locked, the drawer is not required to be pushed by a user, and the user experience is enhanced.

Further, the refrigerating and freezing device and the drawer assembly thereof can enable the atmosphere rich in nitrogen and lean in oxygen to be formed in the atmosphere-controlled fresh-keeping space so as to be beneficial to food fresh-keeping because of the atmosphere-controlled film assembly, and the atmosphere reduces the strength of oxygen respiration of fruits and vegetables by reducing the content of oxygen in the fruit and vegetable storage space, ensures the basic respiration effect, and prevents fruits and vegetables from performing anaerobic respiration, thereby achieving the aim of long-term fresh-keeping of fruits and vegetables. The air blower can improve the fluidity of the air flow in the air-conditioned fresh-keeping space and accelerate the speed of the air entering the oxygen-enriched air collecting cavity.

Furthermore, in the drawer assembly, the air-conditioning membrane assembly is arranged in the accommodating cavity defined by the top wall of the cylinder body and the housing, normal storage of the drawer is not affected, and the drawer and food in the drawer can be prevented from being damaged by collision during movement.

Furthermore, the drawer assembly has good fresh-keeping effect, low requirements on rigidity and strength of the drawer, the barrel and the like, and low realization requirements and low cost.

The above, as well as additional objectives, advantages, and features of the present invention will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present invention when read in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:

FIG. 1 is a schematic view of a drawer assembly according to one embodiment of the present invention;

FIG. 2 is a schematic view of the slide rail assembly of the drawer assembly of FIG. 1;

FIG. 3 is a schematic view of the slide assembly prior to the chuck being in the acceleration assembly;

FIG. 4 is a schematic view of the slide assembly after the positioning posts enter the guide slots;

FIG. 5 is a schematic view of the slide assembly prior to contact of the chuck with the lock collar;

FIG. 6 is a schematic view of the slide assembly after the chuck is locked to the lock plate;

FIG. 7 is another angular schematic view of the slide assembly of FIG. 4;

FIG. 8 is a schematic view of the slide assembly of FIG. 7 with the chuck hidden;

FIG. 9 is a schematic view of the slide assembly of FIG. 8 with the slider hidden;

FIG. 10 is an exploded view of the acceleration assembly;

FIG. 11 is a schematic view of a drawer assembly according to one embodiment of the present invention;

FIG. 12 is an exploded view of the drawer assembly of FIG. 11;

FIG. 13 is a schematic view of the bottom structure of the housing of the drawer assembly of FIG. 11;

FIG. 14 is an exploded schematic view of an air conditioning membrane assembly of the drawer assembly of FIG. 12;

FIG. 15 is a schematic partial block diagram of a refrigeration and freezer according to one embodiment of the invention;

FIG. 16 is a schematic block diagram of the refrigeration and freezer of FIG. 15 from another perspective;

fig. 17 is a schematic view of the cartridge in the drawer assembly of fig. 11.

Detailed Description

FIG. 1 is a schematic view of a drawer assembly 200 according to one embodiment of the invention; fig. 2 is a schematic view of the slide rail assembly of the drawer assembly 200 of fig. 1. As shown in fig. 1 to 2, the embodiment of the present invention provides a drawer assembly 200 for a refrigerating and freezing apparatus (e.g., refrigerator), the drawer assembly 200 including a tub 10 having an opened front side, a drawer 20 inserted into the tub 10 to be pushed and pulled back and forth, and two rail assemblies respectively provided at both lateral ends of the inside of the tub 10. Each slide rail assembly includes an inner rail 90, an outer rail 80. Wherein the inner rail 90 is fixed inside the cylinder 10 extending in the front-rear direction, for example, provided on a lateral side wall of the cylinder 10. The inner rail 90 is slidably disposed on the outer rail 80 to be supported thereby, and is fixed to the drawer 20, such as a connection plate 91 is installed outside the inner rail 90 to be connected with a lateral sidewall of the drawer 20. During the forward and backward pushing and pulling of the drawer 20, the inner rail 90 slides forward and backward on the outer rail 80.

FIG. 3 is a schematic view of the slide assembly prior to the chuck 92 being in the acceleration assembly; fig. 4 is a schematic view of the slide assembly after the positioning post 733 enters the guide slot 924; fig. 5 is a schematic view of the slide rail assembly prior to contact of the chuck 92 with the lock collar 83; fig. 6 is a schematic view of the slide rail assembly after the chuck 92 is locked to the lock plate 83. As shown in fig. 3 to 6, the slide rail assembly further includes a lock plate 83, a chuck 92, and an elastic member 84. The lock disk 83 is rotatably hinged to the rear end of the outer rail 80 about a transverse axis (i.e., the left-right direction of the drawer 20, i.e., the direction perpendicular to the paper surface in fig. 3 to 6, and the pivot axis thereof is the axis 831), and has a front clip post 833 and a rear clip post 832 protruding in the transverse direction provided thereon. The clip 92 is provided at the rear end of the inner rail 90, and has a protruding portion 922 (protruding downward in the drawing) protruding upward or downward. The elastic member 84 is used to apply a moment to the lock collar 83.

During the process of pushing the drawer 20 into the barrel 10 (from fig. 3 to fig. 6), the rear end of the protrusion 922 abuts against the rear clamping post 832 to push the lock disk 83 to rotate to a position where the front clamping post 833 abuts against the front side of the protrusion 922, so as to lock the inner rail 90 from moving forward, and further lock the drawer 20 from moving forward. The resilient member 84 is configured to apply a resistive moment (in fig. 3, the resistive moment is in a counterclockwise direction) to the lock collar 83 when the protrusion 922 pushes the lock collar 83 to rotate. That is, the chuck 92 needs to overcome a certain resistance to push the lock plate 83 to rotate, and the lock plate 83 is stably maintained in the state of fig. 3 when not contacting the chuck 92. When the front locking post 833 abuts against the front side of the protruding portion 922 (i.e., the chuck 92 and the lock collar 83 are in a locked state), the elastic element 84 applies a torque opposite to the resisting torque (clockwise in fig. 6) to the lock collar 83, so that the chuck 92 and the lock collar 83 are stably maintained in a locked state, a good seal is achieved between the drawer 20 and the cylinder 10, and the drawer 20 is prevented from being opened by mistake.

When the drawer 20 is pulled forward, the front end surface of the protrusion 922 applies a force to the front catch 833, so that the lock disk 83 rotates to disengage the front catch 833 from the protrusion 922, thereby unlocking the drawer 20. The front end surface of the projection 922 is a slope surface, for example, in fig. 3 to 6, the front end surface is a slope surface extending downward from front to rear. Thus, when the inner rail 90 is advanced in the locked state (fig. 6), the front locking posts 833 are disengaged from the protrusions 922 along the inclined surfaces, thereby unlocking the inner rail 90.

In some embodiments, as shown in fig. 3-6, a boss 922 on the chuck 92 is caused to protrude downwardly from the chuck 92, with the front and rear posts 833, 832 located above the pivot axle 831 of the lock collar 83. The elastic element 84 is a torsion spring, whose two axial ends are respectively hinged to the outer rail 80 and the lock disk 83, and when the protrusion 922 does not touch the rear clamping post 832, the hinge point 842 between the torsion spring and the lock disk 83 is located above the pivot axle 831 of the lock disk 83, and the elastic direction is forward 20±5n, so that a resisting moment can be applied, as shown in fig. 3. When the front clip 833 is abutted against the front side of the protruding portion 922, the hinge point 842 between the torsion spring and the lock disc 83 is located below the pivot axle 831 of the lock disc 83, and the elastic force direction is forward, so that a moment opposite to the resistance moment direction can be applied, as shown in fig. 6. In some alternative embodiments, a compression spring may be used in place of the torsion spring to exert a forward urging force on the lock collar 83.

In some embodiments, each sled assembly further comprises an acceleration assembly. The accelerator assembly may be configured to cause the accelerator assembly to pull the chuck 92 and the inner rail 90 back upon the inner rail 90 moving back and touching the accelerator assembly, thereby enabling the chuck 92 to automatically lock with the lock collar 83 without requiring the user to force the drawer 20 back.

FIG. 7 is another angular schematic view of the slide assembly of FIG. 4; FIG. 8 is a schematic view of the slide assembly of FIG. 7 with the chuck 92 hidden; FIG. 9 is a schematic view of the slide assembly of FIG. 8 with the slider 70 hidden; fig. 10 is an exploded view of the acceleration assembly. A specific structural form of the acceleration assembly is described below with reference to fig. 7 to 10. The acceleration assembly may include a slider 70, a spring 81, and a link 73. The slider 70 is slidably disposed on the outer rail 80. The spring 81 connects the outer rail 80 with the slider 70 to apply a rearward elastic force to the slider 70. The front end of the link 73 extending forward and backward is rotatably connected to the slider 70 along a lateral axis (as shown in fig. 10, the rotation shaft 731 is hinged to the hinge hole 701), and the rear end has a positioning post 733 protruding laterally. The outer rail 80 is provided with a sliding groove 82 extending forwards and backwards, the top wall or the bottom wall of the sliding groove 82 is provided with a concave bayonet 822, and when the protruding part 922 does not touch the rear clamping post 832, one end (end 732) of the positioning post 733 is clamped into the bayonet 822, so that the sliding block 70 cannot move backwards, as shown in fig. 3. The chuck 92 is provided with a guide slot 924 which is opened rearward and inclined upward or downward from the rear to the front, and during the rearward movement of the chuck 92, the other end (end 732) of the positioning post 733 is made to enter the guide slot 924 and guided by the guide slot 924 to rotate away from the bayonet 822 into the slide slot 82, i.e., the bayonet 822 is unlocked from the slide 70, so that the slide 70 is accelerated rearward under the tension of the spring 81. Since the positioning post 733 is not able to move up and down when it is inserted into the slide slot 82, it can stably abut against the guide slot 924, and the chuck 92 is driven to move backward, that is, the inner rail 90 is driven to move backward.

The connecting rod 73 may be disposed on a side of the slider 70 facing away from the outer rail 80, and the slider 70 is provided with a relief hole 72 to allow the end 732 of the positioning post 733 to pass through and then enter the chute 82.

FIG. 11 is a schematic view of a drawer assembly according to one embodiment of the present invention; FIG. 12 is an exploded view of the drawer assembly of FIG. 11; FIG. 13 is a schematic view of the bottom structure of the housing in the drawer assembly of FIG. 11.

In some embodiments, as shown in fig. 11-13, drawer assembly 200 also includes enclosure 15 and air conditioning membrane assembly 30 and blower 40. The barrel 10 defines an air-conditioned fresh-keeping space 202 with an open front side, and the top wall of the barrel has a hollow portion 13 for allowing air to enter the air-conditioned fresh-keeping space 202, wherein the hollow portion 13 may include a plurality of densely arranged through holes. The front end cap of the drawer 20 is matched with the front opening of the cylinder 10 so as to open or close the air-conditioned fresh-keeping space 202, and the air-conditioned fresh-keeping space 202 is relatively closed. The housing 15 is outside the cylinder 10 and is mounted on the top wall of the cylinder 10 (referred to as the outer top wall, hereinafter the same), and the housing 10 seals the housing-fastening hollowed-out portion 13 to define a containing cavity 11 together with the top wall of the cylinder 10, so that the hollowed-out portion 13 connects only the air-conditioning fresh-keeping space 202 and the containing cavity 11. The modified atmosphere membrane assembly 30 is disposed within the receiving chamber 11 and has at least one modified atmosphere membrane and an oxygen enriched gas collection chamber. The air-conditioning membrane assembly 30 may be flat in shape as a whole and is preferably disposed horizontally in the housing chamber 11 to save space occupied thereby.

The modified atmosphere membrane assembly 30 may be configured such that oxygen in the receiving chamber 11 permeates through the modified atmosphere membrane more into the oxygen enriched gas collection chamber than nitrogen in the receiving chamber 11. Specifically, the inside of each air-conditioning membrane faces the oxygen-enriched gas collection chamber, the outside faces the accommodating chamber 11, and when the pressure of the oxygen-enriched gas collection chamber is smaller than the pressure of the accommodating chamber 11, oxygen in the air of the accommodating chamber 11 enters the oxygen-enriched gas collection chamber through the air-conditioning membrane. Because the accommodating cavity 11 is communicated with the modified atmosphere preserving space 202, partial oxygen in the air in the modified atmosphere preserving space 202 is discharged, and a nitrogen-rich and oxygen-poor gas atmosphere which is beneficial to food preservation can be obtained in the modified atmosphere preserving space 202.

The blower 40 is disposed in the accommodating chamber 11 and located at a lateral side (lateral direction refers to a left-right direction, and is indicated in the drawing) of the air conditioning membrane assembly 30, for example, the blower 40 is disposed at a left side of the air conditioning membrane assembly 30 as shown in fig. 12, but may be disposed at a right side. So that the air in the air-conditioning fresh-keeping space 202 flows into the fan 40 through one side (left side in the drawing) of the hollow part 13, is accelerated to be blown to the air-conditioning membrane assembly 30 by the fan 40, and flows back to the air-conditioning fresh-keeping space 202 from the other side of the hollow part 13, so that the air in the air-conditioning fresh-keeping space 202 continuously and circularly passes through the periphery of the air-conditioning membrane assembly 30, and the oxygen collection effect of the air-conditioning membrane assembly 30 is enhanced. In addition, it has been tested by the inventors that the provision of the blower 40 on one lateral side of the air conditioning membrane assembly 30 provides a more efficient oxygen collection effect than on the front and rear sides thereof.

In the embodiment of the present invention, when the drawer assembly 200 is in use, the air penetrating into the oxygen-enriched gas collection chamber can be pumped out by using an air pumping device (such as a vacuum pump), so that the pressure in the oxygen-enriched gas collection chamber is smaller than the pressure in the accommodating chamber 11, that is, a negative pressure environment is produced in the oxygen-enriched gas collection chamber, and the ambient air can be absorbed into the negative pressure environment. After most of the oxygen is extracted, the main components of the gas in the modified atmosphere fresh-keeping space 202 are nitrogen and a part of oxygen, so that the strength of aerobic respiration of fruits and vegetables can be reduced, and meanwhile, the basic respiration is ensured, and the fruits and vegetables are prevented from carrying out anaerobic respiration, thereby achieving the aim of long-term fresh-keeping of the fruits and vegetables. In addition, the gas atmosphere also has a large amount of gases such as nitrogen, the cooling efficiency of the articles in the accommodating space is not reduced, and fruits and vegetables and the like can be effectively stored.

In order to be connected with the air extracting device to extract the gas in the oxygen-enriched gas collecting cavity, the air regulating membrane assembly 30 also needs to comprise an air outlet pipe 33 communicated with the oxygen-enriched gas collecting cavity. The air outlet pipe 33 can be arranged at any position on the upper, lower, left and right or top of the air regulating membrane assembly 30. However, through the inventor's test, the outlet pipe 33 is disposed at the lateral end of the air conditioning membrane assembly 30 (i.e., disposed at the right end as shown in fig. 13) away from the blower 40, so that the external air flow direction of the air conditioning membrane is consistent with the internal air flow direction (all flowing from left to right), and a higher efficiency oxygen collection effect is desirable.

In some embodiments, as shown in FIG. 13, the fan 40 is preferably a centrifugal fan with an inlet air direction perpendicular to an outlet air direction. The air inlet 41 of the fan 40 faces downwards so as to be connected with the air conditioning fresh-keeping space 202 through the hollowed-out part 13, and the air outlet 42 faces the air conditioning membrane assembly 30. Thus, the air can be directly blown into the membrane adjusting assembly 30 from the air outlet 42 of the fan 40, and the loss caused by the direction change of the air path is reduced.

After the air conditioning membrane assembly 30 is mounted in the receiving chamber 11, a gap is preferably provided between the top thereof and the housing 15 to allow air flow therethrough to increase the air intake area of the air conditioning membrane assembly 40. Of course, a gap may also be provided between the bottom of the air conditioning membrane assembly 30 and the bottom wall of the cartridge 10. Specifically, in some embodiments of the present invention, the distance of the air-conditioning membrane 31 of the upper side in the air-conditioning membrane assembly 30 from the top surface of the accommodation chamber 11 is 8mm to 20mm. The distance from the air-conditioning membrane 31 on the lower side in the air-conditioning membrane assembly 30 to the bottom surface of the accommodation chamber 11 is 8mm to 20mm. In addition, the bottom wall of the cylinder 10 located right below the air-conditioning membrane assembly 30 is preferably provided with a hollowed-out hole.

In some embodiments, as shown in fig. 13, the air conditioning membrane assembly 30 and the blower 40 may be detachably mounted on the casing 15, and specifically, a threaded connection or a snap connection may be adopted, which will not be described herein. Thus, the complex connecting structure arranged on the top wall of the cylinder body 10 with relatively large volume can be avoided, and the manufacturing difficulty is increased. In addition, the inner wall of the housing 15 may be provided with two air guide ribs 151 provided at a distance from each other. The two air guide rib plates 151 are configured to define an air guide channel 152 together with the housing 15 and the top wall of the cylinder 10, and two ends of the air guide channel 152 face the air outlet 42 of the fan 40 and the air conditioning membrane assembly 30 respectively. This enables more wind to be directed to the air conditioning membrane assembly 30.

A top cover 16 may be provided above the cover 15, and the cover 16 may be used to press the cover 15 against the cylinder 10. A sealing ring 17 can be arranged at the joint of the housing 15 and the cylinder body 10 to play a role in sealing and vibration reduction.

In some embodiments, as shown in fig. 12, the drawer assembly 200 further includes a germicidal lamp 60, the germicidal lamp 60 being disposed within the receiving chamber 11 to sterilize the gas. In particular, it may be mounted on the top wall of the cartridge 10 in the vicinity of the air conditioning membrane assembly 30. The germicidal lamp 60 may be a conventional germicidal lamp, and will not be described in detail herein.

Fig. 14 is an exploded view of the air conditioning membrane assembly of the drawer assembly of fig. 12. In some embodiments of the present invention, as shown in fig. 14, the modified atmosphere membrane assembly 30 may be in the form of a flat plate, and the modified atmosphere membrane assembly 30 may further include a support frame 32. The air-conditioning membranes 31 are preferably oxygen-enriched membranes, and can be two, and are arranged on two sides of the supporting frame 32, so that the two air-conditioning membranes 31 and the supporting frame 32 jointly enclose an oxygen-enriched gas collecting cavity. Further, the support frame 32 may include a frame, ribs and/or plates disposed within the frame, and the ribs, ribs and plates may form air flow channels therebetween, grooves may be formed on the surface of the ribs, and grooves may be formed on the surface of the plates to form air flow channels. The ribs and/or plates may increase the structural strength of the air conditioning membrane assembly 30, etc. The support frame 32 has a first surface and a second surface parallel to each other, and the support frame 32 is formed with a plurality of gas flow channels extending over the first surface and the second surface, respectively, and penetrating the support frame 32 to communicate the first surface and the second surface, the plurality of gas flow channels together forming an oxygen-enriched gas collection chamber; at least one air regulating membrane 31 is two planar air regulating membranes, which are respectively laid on the first surface and the second surface of the support frame 32.

In some embodiments of the present invention, the support frame 32 includes an outlet tube 33 in communication with the at least one gas flow channel and is disposed on the rim to allow oxygen in the oxygen-enriched gas collection chamber to be output. The air outlet pipe 33 is communicated with the air extracting device 400. Specifically, the air outlet pipe 33 may be disposed on a long edge of the frame, or disposed on a short edge of the frame, so as to be determined according to the setting direction or actual design requirement of the air conditioning membrane assembly 30, for example, fig. 13, and the air outlet pipe 33 may be disposed on the long edge of the frame. The air-conditioning film 31 is firstly mounted on the frame through a double-sided adhesive tape 34, and then is sealed through a sealant 35.

In some embodiments, the aforementioned at least one airflow channel formed inside the support frame 32 may be one or more cavities in communication with the outlet duct 33. In some embodiments, the aforementioned at least one airflow channel formed inside the support frame 32 may have a mesh structure. Specifically, the support frame 32 may include: the frame, a plurality of first floor and a plurality of second floor. The first rib plates are arranged at intervals in the longitudinal direction and extend in the transverse direction in the frame, and one side surface of the first rib plates forms a first surface. The plurality of second rib plates are arranged at intervals along the transverse direction on the other side surface of the plurality of first rib plates and extend along the longitudinal direction, and the second surface is formed on the side surface of the plurality of second rib plates, which is far away from the first rib plates. The support frame 32 of the present invention ensures continuity of the air flow passage on the one hand, greatly reduces the volume of the support frame 32 on the other hand, and greatly enhances the strength of the support frame 32 by providing a plurality of first ribs spaced apart in the longitudinal direction and extending in the transverse direction and a plurality of second ribs extending in the longitudinal direction on one side surface of the aforementioned plurality of first ribs inside the frame thereof. In addition, the above structure of the support frame 32 ensures that the air-conditioning membrane 31 can be supported sufficiently, and can always maintain good flatness even under the condition that the negative pressure in the oxygen-enriched gas collection cavity is large, thereby ensuring the service life of the air-conditioning membrane assembly 30.

In a further embodiment, the plurality of first ribs may include: a plurality of first narrow ribs and a plurality of first wide ribs. The first wide rib plates are arranged at intervals, and the first narrow rib plates are arranged between two adjacent first wide rib plates. The aforementioned plurality of second ribs may include: the first narrow rib plates and the second wide rib plates are arranged at intervals, and the second narrow rib plates are arranged between two adjacent second wide rib plates. Those skilled in the art will readily appreciate that "wide" and "narrow" herein are relative terms.

In some embodiments, each of the first wide ribs is recessed inwardly from a side surface thereof forming the first surface to form a first groove; each of the second wide ribs is recessed inwardly from its side surface forming the second surface to form a second channel, thereby improving connectivity of its internal lattice structure while ensuring a small thickness (or volume) of the support frame 32.

In a further embodiment, a portion of the surface of each of the first wide ribs facing away from the first surface extends toward the second rib to be flush with the second surface, and is recessed inwardly from the portion of the surface flush with the second surface to form a third groove; the third grooves communicate with the portions where the second grooves intersect to form cross grooves. A part of the surface of at least one second wide rib plate facing away from the second surface extends towards the first rib plate to be level with the first surface, and a fourth groove is formed by inwards sinking the part of the surface level with the first surface; wherein the fourth groove communicates with a portion where the first groove intersects to form a cross groove.

In some embodiments of the present invention, to facilitate the flow of the air stream, as shown in fig. 14, the inner surface of the cover plate portion 15 may extend downward with a plurality of air guiding ribs to guide the air stream from the blower 40 to flow within the receiving chamber 11 over the outer surface of each of the air regulating membranes 31 of the air regulating membrane assembly 30 facing away from the oxygen-enriched gas collection chamber. The plurality of air guide rib plates can be divided into two groups, including a first group of air guide rib plates and a second group of air guide rib plates which are symmetrically arranged about a plane. Each set of air guide ribs includes a first air guide rib 151, at least one second air guide rib 152, and at least one third air guide rib 153. The first air guide rib 151 extends from the air outlet of the centrifugal fan to one side of the accommodating chamber and extends to one lateral outside of the air conditioning membrane assembly 30. Each second air guide rib 152 is disposed between two first air guide ribs 151 and between the air conditioning membrane assembly 30 and the centrifugal fan. Each third air guide rib 153 is located at one lateral outer side of the air regulating membrane module 30 to guide the air flow such that the air flow enters the gap between the air regulating membrane module 30 and the bottom surface or the top surface of the accommodating chamber from both lateral sides of the air regulating membrane module 30.

In some embodiments of the present invention, the cylinder 10 may be provided with a plurality of micro-holes, and the accommodating space may be communicated with the outside of the accommodating space through the plurality of micro-holes. The micro-holes may also be referred to as air pressure balance holes. Each of the microwells may be a millimeter-sized microwell, for example, each of the microwells has a diameter of 0.1mm to 3mm, preferably 1mm, 1.5mm, etc. The pressure in the accommodating space can be not too low by arranging the plurality of micropores, the nitrogen in the accommodating space can not flow out of the accommodating space by arranging the plurality of micropores, even if the flow is very small or even negligible, the preservation of the food in the accommodating space can not be influenced. In some alternative embodiments of the present invention, the cylinder 10 may not have micro holes, and even if a large amount of nitrogen or other gas exists in the accommodating space, the user does not need to take much effort when pulling the drawer 20, and the effort is greatly saved compared with the existing vacuum storage chamber.

FIG. 15 is a schematic partial block diagram of a refrigeration and freezer according to one embodiment of the invention; fig. 16 is a schematic structural view of the refrigerating and freezing apparatus shown in fig. 15 at another view angle. As shown in fig. 15 and 16, embodiments of the present invention provide a refrigeration and freezer that may include a drawer assembly 200 as in any of the embodiments described above. Further, in the refrigerating and freezing apparatus, the drawer assembly 200 further includes the casing 15, the fan 40 of the air conditioning membrane assembly 30, and the air extracting device 400. The air pumping device 400 is communicated with the oxygen-enriched gas collection cavity of the air-conditioning membrane assembly 30 of the drawer assembly 200 through a pipeline 500 so as to pump and exhaust the gas penetrating into the oxygen-enriched gas collection cavity to the outside of the drawer assembly 200, and the pressure of the oxygen-enriched gas collection cavity is smaller than the pressure of the accommodating cavity 11 of the drawer assembly 200.

In some embodiments, the refrigeration and chiller may also include a cabinet 100, a door, and a refrigeration system. The housing 100 defines a storage space 110 and a compressor compartment 140 therein. The drum 10 of the drawer assembly 200 is disposed in the storage space 110. Specifically, the cylinder 10 may be disposed at a lower portion of the storage space 110. Of course, as will be appreciated by those skilled in the art, the cartridge 10 may also be disposed in the middle or upper portion of the storage space 110. The door body may be composed of two side-by-side doors, each rotatably mounted to the case 100, configured to open or close the storage space 110 defined by the case 100. Alternatively, the door body may have only one door. The refrigeration system may be a refrigeration cycle system composed of a compressor, a condenser, a throttle device, an evaporator, and the like. The compressor is mounted to the compressor housing 140. The evaporator is configured to provide cooling directly or indirectly into the storage space 110. Further, the storage space 110 and the receiving space communicate via a plurality of micro-holes.

In some embodiments of the present invention, the storage space 110 is a refrigerated compartment, which is typically stored at a temperature between 2 ℃ and 10 ℃, preferably between 3 ℃ and 8 ℃. Further, the case 100 may further define a freezing chamber 120 and a temperature varying chamber 130, the freezing chamber 120 is disposed below the storage space 110, and the temperature varying chamber 130 is disposed between the freezing chamber 120 and the refrigerating chamber. The temperature in the freezer compartment 120 typically ranges from-14 c to-22 c. The variable temperature chamber 130 can be adjusted as needed to store the appropriate food. The compressor compartment 140 is preferably disposed at the rear lower side of the freezing compartment 120. In some alternative embodiments of the present invention, the storage space 110 may also be the freezing chamber 120 or the temperature changing chamber 130, that is, the temperature range of the storage space 110 may be controlled between-14 ℃ and-22 ℃ or adjusted according to the requirement. Further, the relative positions of the refrigerating chamber, the freezing chamber and the temperature changing chamber can be adjusted according to requirements.

In some embodiments of the present invention, the air extractor 400 is disposed in the compressor compartment 140, so that the space of the compressor compartment 140 can be fully utilized, and no additional space is occupied, so that the additional volume of the refrigerating and freezing device is not increased, and the refrigerating and freezing device can be compact. The compressor compartment extends in a lateral direction of the case, and the air extraction device 400 may be disposed at one lateral end of the compressor compartment 140. The compressor may be disposed at the other lateral end of the compressor compartment 140 such that the air extractor 400 is spaced farther from the compressor, reducing noise and waste heat. In other embodiments of the present invention, the suction device 400 is disposed adjacent to the compressor, and the suction device 400 is disposed at one end of the compressor compartment 140 and between the compressor and the side wall of the compressor compartment 140.

Further, the suction device 400 may include a suction pump, a mounting plate, and a seal box. The mounting plate may be mounted to the bottom surface of the compressor cartridge 140 by a plurality of vibration dampening footpads. The sealing box is arranged on the mounting bottom plate. The air pump is arranged in the sealing box. The seal box may largely block noise and/or waste heat from propagating outwards when the pump is in operation. The damping foot pads (made of rubber) can further improve the damping and noise reducing effects. The inside installing frame that is provided with of seal box, installing frame and seal box's inner wall are connected through a plurality of damping cushion, and the aspiration pump is fixed in inside the installing frame, so in order to alleviate vibration and noise when the aspiration pump operates. Specifically, two vibration reduction cushion blocks are arranged at the bottom of the mounting frame, and the vibration reduction cushion blocks are sleeved on positioning columns on the bottom surface of the sealing box. Two opposite sides of the mounting frame are respectively provided with a round vibration reduction cushion block, and are clamped in clamping grooves of corresponding side walls of the sealing box. And the other two opposite sides of the mounting frame are respectively fixed with a vibration reduction cushion block. The air pump can be positioned between the vibration reduction cushion blocks in the sealing box and fastened to the mounting frame through screws.

In some embodiments, the refrigeration and chiller further includes a drawer position detection device and a controller. The drawer position detection device is configured to generate a drawer closing signal after the drawer 20 is fully pushed into the barrel 10. The controller is electrically connected to the drawer position detection device, the blower 40, and the air extractor 400, and is configured to activate the blower 40 and the drawer 400 to enable the drawer assembly 200 to operate normally after receiving a drawer closing signal. When the drawer closing signal is not received, that is, when the drawer 20 is in an opened state or in an unclosed state, the fan 40 and the drawer device 400 are closed, so that meaningless energy consumption caused by opening the fan 40 and the drawer device 400 is avoided.

Fig. 17 is a schematic view of the cartridge in the drawer assembly of fig. 11. As shown in fig. 17, the drawer position detection device 18 may be provided on the rear wall of the barrel 10 such that the sensing portion 181 thereof protrudes into the interior of the barrel 10 through the opening 19 of the rear wall of the barrel 10. When the drawer 20 is completely pushed into the barrel 10, the rear end of the drawer 20 touches the sensing portion 181, so that the drawer position detecting device 18 generates a drawer closing signal.

The drawer position detecting device may be a circuit mechanical switch, and the sensing portion 181 may be a spring piece. Alternatively, the drawer position detection device may be other electromagnetic devices or sensors commonly used in the art that are capable of generating a predetermined signal upon being touched.

By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described herein in detail, many other variations or modifications of the invention consistent with the principles of the invention may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

1. A drawer assembly for a refrigeration and freezer comprising a barrel having an open front side, a drawer capable of being pushed and pulled back and forth into the barrel, and two slide rail assemblies disposed at both lateral ends of the interior of the barrel, respectively, each of the slide rail assemblies comprising:

an outer rail which is fixed inside the cylinder body in a manner of extending along the front-rear direction;

an inner rail slidably disposed forward and backward on the outer rail to be supported by the outer rail and fixed to the drawer;

the lock disc can be hinged to the rear end of the outer rail in a rotating way around a transverse axis, and a front clamping column and a rear clamping column which transversely protrude are arranged on the lock disc;

the clamping head is arranged at the rear end of the inner rail and is provided with a protruding part protruding upwards or downwards, and in the process that the drawer is pushed into the cylinder body, the rear end of the protruding part abuts against the rear clamping post so as to push the lock disc to rotate until the front clamping post abuts against the front side of the protruding part, so that the inner rail and the drawer are locked; and

an elastic element configured to apply a resisting moment to the lock collar when the boss pushes the lock collar to rotate, and to apply a torque opposite to the resisting moment to the lock collar when the front clip post is abutted against the front side of the boss;

an acceleration assembly configured to cause the acceleration assembly to pull the chuck and the inner rail to accelerate rearward after the inner rail moves rearward and touches the acceleration assembly, the acceleration assembly comprising:

a slider slidably disposed in the outer rail;

a spring connecting the outer rail and the slider to apply a backward elastic force to the slider;

the front end of the connecting rod extending forwards and backwards can be rotationally connected with the sliding block along a transverse axis, and the rear end of the connecting rod is provided with a positioning column protruding transversely; and

the outer rail is provided with a sliding groove extending forwards and backwards, the top wall or the bottom wall of the sliding groove is provided with a concave bayonet, and when the protruding part does not touch the rear clamping column, one end of the positioning column is clamped into the bayonet, so that the sliding block cannot move backwards; and is also provided with

The clamping head is characterized in that the clamping head is further provided with a guide groove with an opening which is backwards, forwards and upwards or downwards inclined from the back, in the backward moving process of the clamping head, the other end of the positioning column enters the guide groove and is guided by the guide groove to rotate to be separated from the bayonet to enter the guide groove, so that the sliding block is accelerated to move backwards under the tensile force of the spring, and the positioning column drives the clamping head to move backwards.

2. The drawer assembly of claim 1, wherein the drawer assembly,

the protruding part protrudes downwards from the clamping head, and the front clamping column and the rear clamping column are positioned above the pivot shaft of the lock disc; and is also provided with

The elastic element is a torsion spring, the two axial ends of the elastic element are respectively hinged to the outer rail and the lock disc, when the protruding part does not touch the rear clamping column, the hinge point between the torsion spring and the lock disc is positioned above the pivot shaft of the lock disc, and the elastic direction is forward; when the front clamping column is attached to the front side of the protruding portion, the hinge point between the torsion spring and the lock disc is located below the pivot shaft of the lock disc, and the elastic force direction is forward.

3. The drawer assembly of claim 1, wherein the drawer assembly,

the front end face of the protruding portion is a slope surface, so that when the inner rail is in a locked state and moves forward, the front clamping column is separated from the protruding portion along the slope surface, and the inner rail is unlocked.

4. The drawer assembly as recited in any one of claims 1-3, wherein,

the top wall of the cylinder body is provided with a hollowed-out part which allows air flow to enter and exit; and the drawer assembly further comprises:

the housing is arranged outside the cylinder and is arranged on the top wall of the cylinder, and the housing seals the hollow part to define an accommodating cavity together with the top wall of the cylinder;

the modified atmosphere membrane assembly is arranged in the accommodating cavity, is provided with at least one modified atmosphere membrane and an oxygen-enriched gas collecting cavity, and is configured to enable oxygen in the accommodating cavity to penetrate through the modified atmosphere membrane more than nitrogen to enter the oxygen-enriched gas collecting cavity, so that a modified atmosphere fresh-keeping space rich in nitrogen and poor in oxygen is formed inside the cylinder.

5. The drawer assembly of claim 4, further comprising:

the fan is arranged in the accommodating cavity and is positioned at one lateral side of the air-conditioning film assembly, so that the air in the air-conditioning fresh-keeping space flows into the fan through one side of the hollowed-out part, is blown to the air-conditioning film assembly by the fan, and flows back to the air-conditioning fresh-keeping space from the other side of the hollowed-out part.

6. The drawer assembly of claim 5, wherein the drawer is configured to receive a drawer,

a gap is formed between the top of the air-conditioning membrane assembly and the housing to allow air flow to pass through; and is also provided with

The inner wall of the housing is provided with two air guide rib plates which are arranged at intervals, the two air guide rib plates are configured to define an air guide channel together with the housing and the top wall of the cylinder body, and two ends of the air guide channel face the air outlet of the fan and the air regulating membrane assembly respectively.

7. The drawer assembly of claim 4, wherein the drawer is configured to receive a drawer,

the air-conditioning membrane assembly further comprises a support frame, wherein the support frame is provided with a first surface and a second surface which are parallel to each other, a plurality of air flow channels which extend on the first surface and the second surface respectively and penetrate through the support frame to communicate the first surface and the second surface are formed on the support frame, and the plurality of air flow channels jointly form the oxygen-enriched gas collecting cavity; and is also provided with

The at least one air-conditioning film is two plane-shaped air-conditioning films which are respectively paved on the first surface and the second surface of the supporting frame.

8. A refrigerated chiller including a drawer assembly according to any one of claims 1 to 7.