CN107144073B

CN107144073B - Refrigerating and freezing device and drawer assembly thereof

Info

Publication number: CN107144073B
Application number: CN201710250508.0A
Authority: CN
Inventors: 王晶; 朱小兵; 张�浩; 王胜飞
Original assignee: Qingdao Haier Co Ltd
Current assignee: Qingdao Haier Co Ltd
Priority date: 2017-04-17
Filing date: 2017-04-17
Publication date: 2019-12-06
Anticipated expiration: 2037-04-17
Also published as: CN107144073A

Abstract

The invention relates to a refrigerating and freezing device and a drawer assembly thereof. The drawer component comprises a cylinder with an open front side; the drawer can be inserted into the barrel in a front-back push-pull manner; the electronic control lock mechanism is configured to be controllably switched to a locking state to lock the drawer in the barrel body or switched to an unlocking state to unlock the drawer when the drawer is completely pushed into the barrel body; and the electric control lock mechanism is provided with an unlocking button which protrudes downwards and is configured to enable the electric control lock mechanism to be switched from a locking state to an unlocking state when being pressed upwards. The drawer and the cylinder body can realize automatic locking and unlocking, are convenient for users to operate, and can still unlock the drawer when the electric control lock mechanism is powered off or fails.

Description

Refrigerating and freezing device and drawer assembly thereof

Technical Field

The invention relates to a refrigerating device, in particular to a refrigerating and freezing device and a drawer assembly thereof.

Background

The drawer of a refrigerator-freezer is generally arranged in a tube in a slidable manner. With the increasing demand for keeping food fresh, it is necessary to form a good seal between the front panel of the drawer and the opening of the barrel after the drawer is completely pushed into the barrel, that is, the front panel needs to be tightly attached to the opening of the barrel.

Therefore, the existing refrigerating and freezing device is provided with a complex mechanical or electromagnetic locking mechanism so as to lock the drawer and the cylinder body, but the existing locking mechanism or the structure is complex and is difficult to manufacture, or the operation is complex and is difficult to control, or the cost is high. In addition, a part of locking mechanisms based on electromagnetic or electric principles cannot normally open the drawer when the power is off, so that inconvenience is brought to users.

disclosure of Invention

It is an object of the present invention to overcome at least one of the deficiencies of the prior art by providing a novel drawer assembly having a drawer and barrel that automatically locks and unlocks, is user-operable, and remains unlocked in the event of a power failure or malfunction of the electrically controlled lock mechanism.

It is a further object of the present invention to obtain a nitrogen rich and oxygen lean atmosphere within the drawer to facilitate the preservation of food.

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 refrigeration freezer comprising:

a cylinder with an open front side;

The drawer can be inserted into the barrel in a front-back push-pull manner;

The electronic control lock mechanism is configured to be controllably switched to a locking state to lock the drawer in the barrel body or switched to an unlocking state to unlock the drawer when the drawer is completely pushed into the barrel body; and is

The electrically controlled lock mechanism has a downwardly projecting unlock button configured to cause the electrically controlled lock mechanism to switch from the locked state to the unlocked state when pressed upwardly.

optionally, the electrically controlled lock mechanism is located at the front end of the outer bottom wall of the barrel.

Optionally, the electrically controlled lock mechanism comprises: the clamping ring is arranged at the bottom of the rear wall of the front end plate of the drawer; the mounting box is arranged at the front end of the outer bottom wall of the cylinder body; the rotary lock disc can be rotatably arranged in the mounting box around a vertical axis, and front clamping teeth and rear clamping teeth extend outwards in the radial direction; and a translational limiting block which can be controlled to be translationally arranged in the mounting box; the electronically controlled lock mechanism is configured to: when the electric control lock mechanism is in a locking state, the front latch is inserted into the clamping ring, and the translation limiting block is positioned at a locking position which prevents the rotary lock disc from rotating along a second direction opposite to the first direction so as to prohibit the clamping ring from moving forwards; when the electric control lock mechanism is in an unlocking state, the translation limiting block is moved to an unlocking position to allow the rotary lock disc to rotate along the first direction to allow the clamping ring to move forwards.

optionally, the translation limiting block can be arranged in the mounting box in a translation manner along the transverse direction of the cylinder body; and the electric control lock mechanism further comprises: the pressing block is vertically and slidably arranged on the mounting box and is matched with the other inclined surface of the translation limiting block through one inclined surface so as to push the translation limiting block to move to an unlocking position when being pressed upwards, and the unlocking button is mounted on the mounting box and abuts against the lower side of the pressing block so as to apply upward pressing force to the pressing block; and a first pressure spring disposed between the button and the mounting case and configured to apply a downward elastic restoring force to the unlock button.

Optionally, the electrically controlled lock mechanism further comprises: the second pressure spring is arranged between the translation limiting block and the mounting box and is configured to apply elastic pre-tightening force to the translation limiting block to move towards the locking position; the electromagnet is arranged in the mounting box; the electronically controlled lock mechanism is configured to: when the electromagnet is electrified, the electromagnet attracts the translation limiting block to an unlocking position; and when the electromagnet is powered off, the translation limiting block is enabled to move to the locking position under the action of the second pressure spring.

optionally, the top wall of the cylinder body is provided with a hollow-out part allowing air flow to enter and exit; and the drawer assembly further comprises: the housing is arranged outside the cylinder and mounted on the top wall of the cylinder, and the housing seals the hollow part of the housing to define an accommodating cavity together with the top wall of the cylinder; the modified atmosphere membrane component 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 nitrogen-enriched and oxygen-depleted modified atmosphere preservation space is formed inside the cylinder.

optionally, the drawer assembly further comprises: and the fan is arranged in the accommodating cavity and positioned at one transverse side of the modified atmosphere module, so that the air in the modified atmosphere space flows into the fan through one side of the hollow part, is blown to the modified atmosphere module by the fan and then flows back to the modified atmosphere space from the other side of the hollow part.

Optionally, there is a gap between the top of the modified atmosphere module and the housing to allow airflow therethrough; and 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 barrel, and two ends of the air guide channel respectively face the air outlet of the fan and the air conditioning membrane assembly.

optionally, the modified atmosphere module further comprises a supporting frame having a first surface and a second surface parallel to each other, and the supporting frame is formed with a plurality of gas flow channels respectively extending on the first surface and the second surface, and penetrating through the supporting frame to communicate the first surface and the second surface, the plurality of gas flow channels together forming an oxygen-enriched gas collection cavity; and at least one air-conditioning film is two planar air-conditioning films which are respectively paved on the first surface and the second surface of the supporting frame.

In another aspect, the invention also provides a refrigeration and freezing device which comprises the drawer assembly of any one of the above items.

Optionally, the refrigeration freezer further comprises air extraction means. The air extracting device is communicated with the oxygen-enriched air collecting cavity of the controlled atmosphere membrane module of the drawer assembly 200 through a pipeline so as to extract the air permeating into the oxygen-enriched air collecting cavity to the outside of the drawer assembly.

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

The refrigeration and freezing device and the drawer assembly thereof are provided with the electric control lock mechanism to realize the locking and unlocking of the drawer and the cylinder, thereby being convenient for realizing automatic control. In addition, the electric control lock mechanism can be unlocked by pulling the unlocking lead, so that the condition that the drawer cannot be unlocked when the electric control lock mechanism is powered off or fails is avoided.

furthermore, in the refrigeration and freezing device and the drawer assembly thereof, the trend of the unlocking lead is guided by the wiring pipeline, and the range of the tractive distance of the unlocking lead is controlled by the sliding block and the mounting seat, so that the unlocking process is more effective and controllable, and the operation of a user is facilitated.

Furthermore, the refrigerating and freezing device and the drawer assembly thereof have the controlled atmosphere membrane assembly, so that a nitrogen-rich and oxygen-poor gas atmosphere which is beneficial to food preservation can be formed in the controlled atmosphere preservation space, the oxygen content of the fruit and vegetable preservation space is reduced by the gas atmosphere, the aerobic respiration intensity of the fruit and vegetable is reduced, the basic respiration is ensured, and the fruit and vegetable is prevented from being subjected to anaerobic respiration, so that the aim of preserving the fruit and vegetable for a long time is fulfilled. The fan can improve the fluidity of airflow in the air-conditioning and fresh-keeping space and accelerate the speed of the gas entering the oxygen-enriched gas collecting cavity.

Furthermore, in the drawer assembly, the modified atmosphere assembly is arranged in the accommodating cavity defined by the top wall of the cylinder body and the housing, so that normal storage of the drawer is not influenced, and the drawer and food in the drawer can be prevented from being collided and damaged during movement.

Furthermore, the drawer assembly provided by the invention has a good fresh-keeping effect, and has low requirements on the rigidity and strength of the drawer, the cylinder and the like, the implementation requirement is low, and the cost is low.

the above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

drawings

Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

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

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

FIG. 3 is a schematic view of the bottom structure of the front end plate of the drawer;

FIG. 4 is an exploded schematic view of the electronically controlled lock mechanism of FIG. 1;

FIG. 5 is a further exploded schematic view of the electronically controlled lock mechanism of FIG. 4;

FIG. 6 is a schematic view of the lock mechanism in a locked state;

FIG. 7 is a schematic view of an electronically controlled lock mechanism in an unlocked state;

FIG. 8 is a schematic structural view of a drawer assembly according to another embodiment of the present invention;

FIG. 9 is an exploded view of the drawer assembly of FIG. 8;

FIG. 10 is a bottom structural view of the housing of the drawer assembly of FIG. 8;

FIG. 11 is an exploded view of the modified atmosphere module in the drawer assembly of FIG. 9;

Fig. 12 is a schematic partial structural view of a refrigeration freezer in accordance with one embodiment of the invention;

fig. 13 is a schematic block diagram of another perspective of the refrigeration-freezing apparatus shown in fig. 12;

FIG. 14 is a schematic view of the cartridge in the drawer assembly of FIG. 8.

Detailed Description

referring now to fig. 1-14, an embodiment of a refrigerated freezer and drawer assembly therefor will be described, with the "up" and "down" directions being indicated in the drawings and the "lateral" direction referring to the x-axis direction indicated in the drawings.

FIG. 1 is a schematic side view of a drawer assembly according to one embodiment of the present invention; FIG. 2 is a schematic bottom view of the drawer assembly of FIG. 1. As shown in fig. 1 and 2, an embodiment of the present invention provides a drawer assembly 200 for a refrigerating and freezing apparatus (e.g., a refrigerator), the drawer assembly 200 including a barrel 10 having an open front side, a drawer 20 inserted into the barrel 10 to be pushed and pulled back and forth, and an electrically controlled lock mechanism 50. The embodiment of the present invention may be configured such that the cylinder 10 is detachably mounted to the refrigerating and freezing apparatus, or the chamber of the refrigerating and freezing apparatus is directly formed as the cylinder 10 to form a drawer-type chamber. After the drawer 20 is completely inserted into the barrel 10, the electrically controlled lock mechanism 50 is used to lock the position of the drawer 20 so that the drawer 20 cannot move forward, and thus the drawer is prevented from being opened unintentionally, so that the drawer 20 can better seal the front opening of the barrel 10, and a sealed fresh-keeping space can be formed in the drawer 20.

The electronically controlled lock mechanism 50 is configured to controllably switch to a locked state to lock the drawer 20 to the cartridge 10 or to an unlocked state to unlock the drawer 20 when the drawer 20 is fully pushed into the cartridge 10.

An electrically controlled lock mechanism 50 is preferably provided at the front end of the outer bottom wall of the cartridge 10 to lock with the front end plate 22 of the drawer 20.

the electronic control lock mechanism 50 is electromagnetically locked and unlocked, and when power failure or other faults occur, the electronic control lock mechanism may not be normally locked and unlocked. Especially, the unlocking is impossible, which can affect the access of the user to the goods. To this end, the present embodiment is further provided with an unlock button 76. The unlock button 76 is configured to cause the electronically controlled lock mechanism 50 to switch from the locked state to the unlocked state when pressed upward.

FIG. 3 is a schematic view of the bottom structure of the front end plate of the drawer; FIG. 4 is an exploded schematic view of the electronically controlled lock mechanism of FIG. 1; FIG. 5 is a further exploded schematic view of the electronically controlled lock mechanism of FIG. 4; FIG. 6 is a schematic view of the lock mechanism in a locked state; fig. 7 is a schematic view of an electronically controlled lock mechanism in an unlocked state. Referring now to fig. 3-7, an alternative configuration of the electronically controlled lock mechanism 50 will now be described.

as shown in fig. 3 to 7, the bottom of the rear wall of the front end plate 22 of the drawer 20 is provided with a snap ring 51, which is of a ring structure, and when the drawer 20 is completely pushed into the cartridge 10, the snap ring 51 extends out of the cartridge 10 through a through hole at the rear of the cartridge 10 so as to be locked with a rotary lock plate 56 located outside the cartridge 10. The electrically controlled lock mechanism 50 includes a mounting box, a rotating lock disk 56 and a translation limiting block 53.

The mounting box includes a box body 52, a cover 528, and a mounting cover 529. The case 52 is mounted to the front end of the outer bottom wall of the cartridge 10 with a receiving space defined therein, the cover 528 is for closing the lower opening of the case 52, and the mounting cap 529 is for fixing the case 52 to the cartridge 10.

As shown in fig. 5 to 7, the rotary lock plate 56 is rotatably mounted in the mounting box along a vertical (i.e. up-down) axis (such that it can be rotatably sleeved on one vertical column 563), and extends radially outward to form a front latch 561 and a rear latch 562 (the front latch 561 is located in front of the rear latch 562). The snap ring 51 may extend into the cartridge body 52 through an opening 524 of the cartridge body 52. When the drawer 20 is closed, the snap ring 51 moves backward, and first contacts the rear latch 562 to drive the rotary lock disc 56 to rotate in a first direction (in fig. 5 to 7, the first direction is counterclockwise), so that the front latch 561 is inserted into the snap ring 51 during the rotation process, thereby locking the electrically controlled lock mechanism 50. The translation stopper 53 is mounted in the case 52 in a controlled translation. Electronically controlled lock mechanism 50 is configured to:

When the electrically controlled lock mechanism 50 is in the locked state (see fig. 6), the front latch 561 is inserted into the snap ring 51, and the translational stopper 53 is placed in a locked position where the rotary lock plate 56 cannot be rotated in a second direction opposite to the first direction, so as to prohibit the snap ring 51 from advancing. For example, in fig. 6, the translational stop 53 is positioned behind the end of the front latch 561 to restrain the rotary lock disk 56 from rotating in the second direction (i.e., clockwise), thus holding the electronically controlled lock mechanism 50 firmly in the locked state.

When the electrically controlled lock mechanism 50 is in the unlocked state (see fig. 7), the translational stop 53 is moved to an unlocked position (from the position of fig. 6 to the position of fig. 7 in the negative x-axis direction) to allow the rotary lock disk 56 to rotate in the first direction to allow the latch 51 to move forward, so that the user can smoothly pull the drawer 20 forward to smoothly disengage the latch 51 from the front latch 561 to unlock the lock.

In some embodiments, the electrically controlled lock mechanism 50 controls the translation of the translation stop 53 in the following manner. As shown in fig. 5 to 7, the electrically controlled lock mechanism 50 further includes a second compression spring 57 and an electromagnet 55. The second compression spring 57 is disposed between the translational stopper 53 and the case 52, and is configured to apply an elastic preload to the translational stopper 53 to move toward the lock position (shown in fig. 6 as a forward direction toward the x-axis). The electromagnet 55 is arranged in the box body 52, and the translation limiting block 53 is made of iron materials. Electronically controlled lock mechanism 50 is configured to: when the electromagnet 55 is energized, it attracts the translational stopper 53 to the aforementioned unlocking position (see fig. 7); when the electromagnet 55 is powered off, the attraction force of the electromagnet to the translation limiting block 53 disappears, so that the translation limiting block 53 moves to the locking position (as shown in fig. 6) under the action of the second pressure spring 57.

In the embodiment of the present invention, when the drawer 20 is in the closed state (the drawer 20 is in the closed state for most of the time), the electromagnet 55 is in the power-off state, and the electromagnet 55 needs to be turned on only in the opening process (the time for opening the drawer 20 is much shorter than the time for closing), so that the opening time of the electromagnet 55 can be greatly reduced, and the electric energy can be saved.

in some alternative embodiments, other prior art techniques may also be used to achieve the controlled translation of the translation limiting block 53, for example, a linear motor is set to directly drive the translation limiting block 53 to translate, or a rotary motor and a transmission mechanism are used to convert rotation into translation, so as to drive the translation limiting block 53 to translate. The detailed structure is not described herein.

In the above embodiment, the unlocking of the electronic control lock mechanism 50 can be realized by moving the translation limiting block 53 along the x axis in the negative direction, so that the unlocking lead 75 can directly pull the translation limiting block 53 to move, and the translation limiting block 53 can also be indirectly driven to move by setting the transmission mechanism.

In some embodiments, as shown in fig. 4 and 5, the translational stop 53 is translatably disposed within the cassette 52 in a transverse direction (x-direction) of the cartridge 10. The electronically controlled lock mechanism 50 further includes a pressing block 77 and a first compression spring 78. The pressing block 77 is vertically slidably provided to the case 52, and cooperates with the other inclined surface 531 of the translation limiting block 53 through one inclined surface 771 to push the translation limiting block 53 to move to the unlocking position when being pressed upward. For example, in fig. 5, the translation limiting block 53 moves in the negative direction along the x-axis, i.e., can move from the locking position shown in fig. 6 to the unlocking position. The unlock button 76 protrudes through the escape opening 527 of the mounting cover 529 and its upper side abuts against the lower side of the pressing block 77 to apply an upward pressing force to the pressing block 77. A first compression spring 78 is provided between the unlock button 76 and the case body 52, and is configured to apply an elastic restoring force (downward as viewed in fig. 5) to the unlock button 76 that urges it to release the pressing block 77. The user can press the unlocking button 76 upwards to overcome the elasticity of the first compression spring 78 to move upwards so as to press the pressing block 77, so that the pressing block 77 drives the translation limiting block 53 to translate to the unlocking position along the negative direction of the x axis by utilizing the inclined plane, and unlocking is realized.

FIG. 8 is a schematic structural view of a drawer assembly according to another embodiment of the present invention; FIG. 9 is an exploded view of the drawer assembly of FIG. 8; fig. 10 is a bottom view of the housing of the drawer assembly of fig. 8.

In some embodiments, as shown in fig. 8-10, the drawer assembly 200 further comprises a housing 15 and a modified atmosphere assembly 30 and a blower 40. The barrel 10 defines a modified atmosphere space 202 with an open front, and the top wall thereof has a hollow-out portion 13 allowing airflow to enter and exit the modified atmosphere space 202, and the hollow-out portion 13 may include a plurality of through holes densely arranged. The front end cap of the drawer 20 mates with the front opening of the cartridge 10 to open or close the modified atmosphere space 202, leaving the modified atmosphere space 202 relatively closed. The cover 15 is outside the barrel 10 and is mounted on the top wall of the barrel 10 (referred to as the top wall of the outside, the same applies below), and the cover 10 seals the cover fastening hollow-out portion 13 to define a containing cavity 11 together with the top wall of the barrel 10, so that the hollow-out portion 13 only communicates with the modified atmosphere space 202 and the containing cavity 11. The gas-regulating membrane assembly 30 is arranged in the accommodating cavity 11 and is provided with at least one gas-regulating membrane and an oxygen-enriched gas collecting cavity. The modified atmosphere module 30 may be a flat plate as a whole, and is preferably horizontally disposed in the accommodating chamber 11 to save the space occupied by it.

The modified atmosphere assembly 30 can be configured such that more oxygen in the holding chamber 11 permeates the modified atmosphere membrane into the oxygen-enriched gas collection chamber than nitrogen in the holding chamber 11. Specifically, the inner side of each modified atmosphere membrane faces the oxygen-enriched gas collection cavity, the outer side faces the accommodating cavity 11, and when the pressure of the oxygen-enriched gas collection cavity is lower than that of the accommodating cavity 11, oxygen in the air in the accommodating cavity 11 penetrates through the modified atmosphere membrane and enters the oxygen-enriched gas collection cavity. Because the accommodating cavity 11 is communicated with the modified atmosphere space 202, part of oxygen in the air in the modified atmosphere space 202 can be discharged, and the gas atmosphere which is rich in nitrogen and poor in oxygen and is beneficial to food preservation can be obtained in the modified atmosphere space 202.

The fan 40 is disposed in the accommodating cavity 11 and located on one lateral side (lateral refers to left and right direction, and is marked in the figure) of the modified atmosphere module 30, for example, the fan 40 is disposed on the left side of the modified atmosphere module 30 as shown in fig. 9, but may be disposed on the right side. Thus, the air in the modified atmosphere space 202 flows into the fan 40 through one side (the left side in the figure) of the hollow part 13, is accelerated by the fan 40 to blow towards the modified atmosphere module 30, and then flows back to the modified atmosphere space 202 from the other side of the hollow part 13, so that the air in the modified atmosphere space 202 continuously and circularly passes through the periphery of the modified atmosphere module 30, and the oxygen collecting effect of the modified atmosphere module 30 is enhanced. In addition, the inventor tests that the air blower 40 is arranged on one lateral side of the modified atmosphere module 30, and the oxygen collection effect with higher efficiency can be achieved than that of the air blower 40 arranged on the front side and the rear side of the modified atmosphere module.

In the embodiment of the present invention, when the drawer assembly 200 is in use, the air penetrating into the oxygen-enriched air collecting chamber can be pumped out by using the air pumping device (such as a vacuum pump) so that the pressure in the oxygen-enriched air collecting chamber is lower than the pressure in the accommodating chamber 11, i.e. a negative pressure environment is created in the oxygen-enriched air collecting chamber, which is convenient for absorbing ambient air into the oxygen-enriched air collecting chamber. After most of oxygen is pumped out, the main gas components in the modified atmosphere preservation space 202 are nitrogen and part of oxygen, so that the aerobic respiration strength of fruits and vegetables can be reduced, the basic respiration is ensured, and the fruits and vegetables are prevented from anaerobic respiration, thereby achieving the purpose of long-term preservation of the fruits and vegetables. In addition, the gas atmosphere also has a large amount of gases such as nitrogen, the cooling efficiency of articles in the accommodating space cannot be reduced, and fruits and vegetables can be effectively stored.

in order to connect with the air extractor to extract the air in the oxygen-enriched air collecting cavity, the controlled atmosphere module 30 further includes an air outlet pipe 33 connected to the oxygen-enriched air collecting cavity. The outlet pipe 33 can be arranged at any position of the upper, lower, left and right sides or the top of the modified atmosphere module 30. However, the inventor tests that the outlet pipe 33 is arranged at the transverse end (namely, the right end in the figure 10) of the modified atmosphere module 30 far away from the fan 40, so that the external airflow direction of the modified atmosphere module is consistent with the internal airflow direction (both flows from left to right), and the oxygen collection effect with higher efficiency is desirable.

In some embodiments, as shown in fig. 10, the fan 40 is preferably a centrifugal fan with an air inlet direction perpendicular to an air outlet direction. The air inlet 41 of the fan 40 faces downward to communicate with the modified atmosphere space 202 through the hollow portion 13, and the air outlet 42 faces the modified atmosphere module 30. Thus, air can be directly blown to the air conditioning membrane module 30 from the air outlet 42 of the fan 40, and loss caused by diversion of the air path is reduced.

After the modified atmosphere module 30 is installed in the accommodating cavity 11, a gap is preferably formed between the top of the modified atmosphere module 30 and the housing 15 to allow airflow to pass through, so as to increase the air inlet area of the modified atmosphere module 40. Of course, a gap may be provided between the bottom of the modified atmosphere module 30 and the bottom wall of the cylinder 10. Specifically, in some embodiments of the invention, the distance between the modified atmosphere module 30 on the upper side and the top surface of the accommodating cavity 11 is 8mm to 20 mm. The distance between the modified atmosphere membrane 31 on the lower side in the modified atmosphere module 30 and the bottom surface of the accommodating cavity 11 is 8mm to 20 mm. The bottom wall of the cylinder 10 located right below the modified atmosphere module 30 is preferably provided with a hollow hole.

in some embodiments, as shown in fig. 10, both the modified atmosphere module 30 and the blower 40 can be detachably mounted to the housing 15, specifically, a threaded connection or a snap connection can be adopted, and details are not repeated herein. Therefore, the complex connecting structure arranged on the top wall of the cylinder 10 with relatively large volume can be avoided, and the manufacturing difficulty is increased. In addition, the inner wall of the housing 15 may have two wind guide ribs 151 disposed at a distance. The two air guide ribs 151 are configured to define an air guide channel 152 together with the cover 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 can direct more wind to the modified atmosphere module 30.

Further, a top cover 16 may be provided above the cover 15, and the cover 16 may press the cover 15 against the cylinder 10. The joint of the cover 15 and the cylinder 10 can be further provided with a sealing ring 17 to play a role of sealing and damping.

in some embodiments, as shown in fig. 9, the drawer assembly 200 further includes a germicidal lamp 60, the germicidal lamp 60 being disposed within the receiving cavity 11 to sterilize the gas. In particular, it can be installed on the top wall of the cylinder 10 and located near the modified atmosphere module 30. The germicidal lamp 60 may be a germicidal lamp commonly used in the art and will not be described in detail herein.

Figure 11 is an exploded view of the modified atmosphere module in the drawer assembly of figure 9. In some embodiments of the invention, as shown in fig. 11, the modified atmosphere module 30 can be in the form of a flat plate, and the modified atmosphere module 30 can further include a support frame 32. The modified atmosphere membrane 31 is preferably an oxygen-rich membrane, and can be two, and is arranged on two sides of the supporting frame 32, so that the two modified atmosphere membranes 31 and the supporting frame 32 together form an oxygen-rich gas collecting cavity. Further, the supporting frame 32 may include a frame, and rib plates and/or flat plates disposed in the frame, wherein airflow channels may be formed between the rib plates, between the rib plates and the flat plates, and grooves may be formed on the surfaces of the rib plates and the surfaces of the flat plates to form the airflow channels. The ribs and/or plates can improve the structural strength of the modified atmosphere module 30, and the like. The supporting frame 32 has a first surface and a second surface which are parallel to each other, the supporting frame 32 is formed with a plurality of gas flow channels which respectively extend on the first surface and the second surface and penetrate through the supporting frame 32 to communicate the first surface and the second surface, and the plurality of gas flow channels together form an oxygen-enriched gas collecting cavity; the at least one modified atmosphere film 31 is two planar modified atmosphere films, 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 passage, and 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 extractor 400. Specifically, the outlet pipe 33 can be disposed on the long edge of the frame, or disposed on the short edge of the frame, as determined by the disposition orientation of the modified atmosphere module 30 or the actual design requirements, for example, fig. 10, and the outlet pipe 33 can be disposed on the long edge of the frame. The modified atmosphere film 31 is firstly installed on the frame through the double-sided adhesive tape 34 and then sealed through the sealant 35.

In some embodiments, the at least one airflow passage formed inside the support frame 32 may be one or more cavities communicating with the outlet pipe 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 ribbed plates are arranged in the frame at intervals along the longitudinal direction and extend along the transverse direction, and one side surfaces of the first ribbed plates form a first surface. The second ribs are arranged on the other side surfaces of the first ribs at intervals along the transverse direction and extend along the longitudinal direction, and the side surfaces of the second ribs far away from the first ribs form second surfaces. The supporting frame 32 of the present invention is provided with a plurality of first ribs spaced apart in the longitudinal direction and extending in the lateral direction and a plurality of second ribs spaced apart in the lateral direction and extending in the longitudinal direction on one side surface of the first ribs, so that the continuity of the airflow channel is ensured, the volume of the supporting frame 32 is greatly reduced, and the strength of the supporting frame 32 is greatly enhanced. In addition, the structure of the supporting frame 32 ensures that the modified atmosphere membrane 31 can obtain enough support, and can always keep better flatness even under the condition of larger negative pressure in the oxygen-enriched gas collecting cavity, thereby ensuring the service life of the modified atmosphere 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 rib plates are arranged at intervals, and the first narrow rib plates are arranged between every two adjacent first rib plates. The plurality of second ribs may include: the second rib plates are arranged at intervals, and the second rib plates are arranged between every two adjacent second rib plates. Those skilled in the art will readily appreciate that the terms "wide" and "narrow" are used herein in a relative sense.

In some embodiments, each of the first broad ribs is recessed inward from a side surface thereof on which the first surface is formed to form a first groove; each second rib plate is recessed inward from the surface of the second surface to form a second groove, so that the connectivity of the internal grid structure of the support frame 32 is improved on the premise of ensuring that the thickness (or volume) of the support frame is small.

In a further embodiment, a part of the surface of each first wide rib facing away from the first surface extends toward the second rib to be flush with the second surface, and a third groove is formed by recessing inward from the part of the surface flush with the second surface; the third groove is communicated with the crossed part of the second groove to form a cross groove. Part of the surface of at least one second wide rib in the plurality of second wide ribs, which is far away from the second surface, extends towards the first wide rib to be flush with the first surface, and the part of the surface, which is flush with the first surface, is inwards recessed to form a fourth groove; wherein the fourth groove is communicated with the crossed part of the first groove to form a cross groove.

In some embodiments of the present invention, to facilitate the flow of the air flow, as shown in fig. 11, the inner surface of the cover plate portion 15 may extend downward with a plurality of air guide ribs to guide the air flow from the fan 40 to flow through the outer surface of each modified atmosphere membrane 31 of the modified atmosphere membrane module 30 facing away from the oxygen-enriched air collecting chamber in the accommodating chamber 11. The plurality of air guide rib plates can be divided into two groups, and the two groups of air guide rib plates comprise a first group of air guide rib plates and a second group of air guide rib plates, wherein the first group of air guide rib plates and the second group of air guide rib plates are symmetrically arranged on the first group of air guide rib plates relative to 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 wind guiding rib plate 151 extends from the air outlet of the centrifugal fan to one side of the accommodating cavity and extends to one transverse outer side of the modified atmosphere module 30. Each second air guiding rib plate 152 is arranged between two first air guiding rib plates 151 and is positioned between the air-conditioning membrane assembly 30 and the centrifugal fan. Each third air guiding rib 153 is located on one lateral outer side of the modified atmosphere module 30 to guide the air flow to enter the gap between the modified atmosphere module 30 and the bottom surface or the top surface of the accommodating cavity from both lateral sides of the modified atmosphere module 30.

in some embodiments of the present invention, the cylinder 10 may be formed with a plurality of micro holes, and the receiving space may communicate with the outside of the receiving space through the plurality of micro holes. The micropores may also be referred to as air pressure balance holes. Each micropore may be a millimeter-sized micropore, for example, each micropore has a diameter of 0.1mm to 3mm, preferably 1mm, 1.5mm, or the like. The arrangement of the plurality of micropores can prevent the pressure in the accommodating space from being too low, the arrangement of the plurality of micropores can not make the nitrogen in the accommodating space flow out, the flow is very small or even negligible, and the preservation of food in the accommodating space is not influenced. In some optional embodiments of the present invention, the cylinder 10 may not have micro holes, even though there is a large amount of gas such as nitrogen in the accommodating space, the user does not need to use much effort when pulling the drawer 20, and compared with the existing vacuum storage chamber, the present invention can save much effort.

Fig. 12 is a schematic partial structural view of a refrigeration freezer in accordance with one embodiment of the invention; fig. 13 is a schematic configuration view from another perspective of the refrigerating and freezing apparatus shown in fig. 12. As shown in fig. 12 and 13, an embodiment of the present invention provides a refrigeration and freezing apparatus, which may include the drawer assembly 200 of any of the above embodiments. Furthermore, in the refrigerating and freezing device, the drawer assembly 200 further comprises the housing 15, the air-conditioning module 30, the fan 40 and the air extractor 400. The gas-extracting device 400 is communicated with the oxygen-enriched gas collecting cavity of the controlled atmosphere module 30 of the drawer assembly 200 via a pipeline 500 to extract the gas permeating into the oxygen-enriched gas collecting cavity out of the drawer assembly 200, and the pressure of the oxygen-enriched gas collecting cavity is lower than that of the accommodating cavity 11 of the drawer assembly 200.

In some embodiments, the refrigeration and freezing apparatus may further include a cabinet 100, a door, and a refrigeration system. The cabinet 100 defines therein a storage space 110 and a compressor compartment 140. The cylinder 10 of the drawer assembly 200 is disposed in the storage space 110. Specifically, the cartridge 10 may be disposed at a lower portion of the storage space 110. Of course, as can be appreciated by those skilled in the art, the cartridge 10 may be disposed in the middle or upper portion of the storage space 110. The door may be formed of two split doors, each of which is rotatably installed in the cabinet 100 and configured to open or close the storage space 110 defined in the cabinet 100. Alternatively, the door body may have only one door. The refrigeration system may be a refrigeration cycle system constituted by a compressor, a condenser, a throttle device, an evaporator, and the like. The compressor is mounted to the compressor bin 140. The evaporator is configured to provide cooling energy 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 refrigerating chamber, and the storage temperature is generally between 2 ℃ and 10 ℃, preferably between 3 ℃ and 8 ℃. Further, the cabinet 100 may further define a freezing chamber 120 and a variable temperature chamber 130, the freezing chamber 120 being disposed below the storage space 110, and the variable temperature chamber 130 being disposed between the freezing chamber 120 and the refrigerating chamber. The temperature in the freezing chamber 120 is generally in the range of-14 c to-22 c. The variable temperature chamber 130 can be adjusted as needed to store appropriate food. The compressor bin 140 is preferably disposed at the rear lower side of the freezing chamber 120. In some alternative embodiments of the present invention, the storage space 110 may also be the freezing chamber 120 or the warming chamber 130, that is, the temperature of the storage space 110 may be controlled to be in the range of-14 ℃ to-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-extracting device 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, and therefore, the additional volume of the refrigeration and freezing device is not increased, and the refrigeration and freezing device can be made compact. The compressor housing extends in a lateral direction of the case, and the air exhaust device 400 may be provided at one lateral end of the compressor housing 140. The compressor may be disposed at the other lateral end of the compressor compartment 140 such that the air extraction device 400 is relatively far from the compressor, reducing noise and waste heat buildup. In other embodiments of the present invention, the air extraction device 400 is disposed adjacent to the compressor, and the air extraction device 400 is disposed at one end of the compressor compartment 140 between the compressor and the sidewall of the compressor compartment 140.

Further, the air exhaust apparatus 400 may include an air exhaust pump, a mounting base plate, and a sealing case. The mounting base plate may be mounted to the bottom surface of the compressor bin 140 by a plurality of shock absorbing foot pads. The seal box is installed in mounting plate. The air pump is arranged in the sealing box. When the air pump operates, the sealing box can prevent noise and/or waste heat from spreading outwards to a great extent. The damping foot pads (which can be made of rubber) can further improve the damping and noise reduction effects. The sealing box is internally provided with an installation frame, the installation frame is connected with the inner wall of the sealing box through a plurality of damping cushion blocks, and the air pump is fixed in the installation frame, so as to reduce vibration and noise during operation of the air pump. Specifically, the bottom of installation frame is provided with two damping cushion, and the damping cushion cover is established on the reference column of seal box bottom surface. Two opposite sides of the mounting frame are respectively provided with a circular damping cushion block and are clamped in clamping grooves in corresponding side walls of the sealing box. And the other two opposite sides of the mounting frame are respectively fixed with a damping cushion block. The suction pump may be located between respective damping blocks within the sealing box and fastened to the mounting frame by screws.

In some embodiments, the refrigerated freezer further comprises a drawer position detection device and a controller. The drawer position detecting means is configured to generate a drawer closing signal after the drawer 20 is completely pushed into the drum 10. The controller is electrically connected to the drawer position detecting device, the blower 40 and the air extracting device 400, and is configured to activate the blower 40 and the drawer device 400 after receiving the drawer closing signal, so that the drawer assembly 200 operates normally. When the drawer closing signal is not received, namely the drawer 20 is in an open state or an unopened state, the fan 40 and the drawer device 400 are closed, so that the situation that the fan 40 and the drawer device 400 are opened at the moment to cause meaningless energy consumption is avoided.

FIG. 14 is a schematic view of the cartridge in the drawer assembly of FIG. 8. As shown in fig. 14, the drawer position detecting device 18 may be disposed on the rear wall of the cartridge 10 such that the sensing portion 181 thereof protrudes into the interior of the cartridge 10 through the opening 19 of the rear wall of the cartridge 10. When the drawer 20 is completely pushed into the barrel 10, the rear end of the drawer 20 contacts 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 mechanical switch, and the sensing portion 181 may be a spring plate. Alternatively, the drawer position detecting device may be any other electromagnetic device or sensor commonly used in the art that can generate a predetermined signal after being touched.

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

Claims

1. A drawer assembly for a refrigeration freezer comprising:

A cylinder with an open front side;

A drawer which can be inserted into the barrel body in a front-back push-pull manner;

The electronic control lock mechanism is arranged at the front end of the outer bottom wall of the barrel and is configured to be controllably switched to a locking state to lock the drawer on the barrel or switched to an unlocking state to unlock the drawer when the drawer is completely pushed into the barrel; and is

the electric control lock mechanism is provided with an unlocking button protruding downwards and configured to enable the electric control lock mechanism to be switched from the locking state to the unlocking state when being pressed upwards; the electrically controlled lock mechanism comprises:

The clamping ring is arranged at the bottom of the rear wall of the front end plate of the drawer;

the mounting box is arranged at the front end of the outer bottom wall of the cylinder body;

The rotary lock disc can be rotatably arranged in the mounting box around a vertical axis, front clamping teeth and rear clamping teeth extend outwards in the radial direction, and the rotary lock disc is configured to firstly touch the rear clamping teeth when the clamping ring moves backwards so as to drive the rotary lock disc to rotate along a first direction, so that the front clamping teeth are inserted into the clamping ring; and

The translation limiting block can be controlled to be mounted in the mounting box in a translation mode;

The electronically controlled lock mechanism is configured to:

When the electronic control lock mechanism is in the locking state, the front latch is inserted into the snap ring, and the translation limiting block is in a locking position where the rotary lock disc cannot rotate in a second direction opposite to the first direction, so that the forward movement of the snap ring is prohibited;

When the electric control lock mechanism is in the unlocking state, the translation limiting block is moved to an unlocking position to allow the rotary lock disc to rotate along the first direction to allow the clamping ring to move forwards.

2. The drawer assembly of claim 1, wherein

the translation limiting block can be arranged in the mounting box in a translation mode along the transverse direction of the barrel; and is

The electrically controlled lock mechanism further comprises:

the pressing block is vertically and slidably arranged on the mounting box and is matched with the other inclined surface of the translation limiting block through one inclined surface so as to push the translation limiting block to move to the unlocking position when being pressed upwards, and the unlocking button is mounted on the mounting box and abuts against the lower side of the pressing block so as to apply upward pressing force to the pressing block; and

And the first pressure spring is arranged between the button and the mounting box and is configured to apply downward elastic restoring force to the unlocking button.

3. The drawer assembly of claim 1, wherein the electrically controlled lock mechanism further comprises:

The second pressure spring is arranged between the translation limiting block and the mounting box and is configured to apply elastic pre-tightening force to the translation limiting block to move towards the locking position; and

The electromagnet is arranged in the mounting box;

the electronically controlled lock mechanism is configured to:

when the electromagnet is electrified, the electromagnet attracts the translation limiting block to the unlocking position; and is

And when the electromagnet is powered off, the translation limiting block is enabled to move to the locking position under the action of the second pressure spring.

4. The drawer assembly of any of claims 1 to 3, wherein

The top wall of the cylinder body is provided with a hollow part allowing air flow to enter and exit; and the drawer assembly further comprises:

The cover is arranged outside the cylinder and mounted on the top wall of the cylinder, and the cover is sealed and covers the hollow part to define an accommodating cavity together with the top wall of the cylinder;

The modified atmosphere membrane component 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 nitrogen-enriched and oxygen-depleted modified atmosphere preservation space is formed inside the cylinder.

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

And the fan is arranged in the accommodating cavity and is positioned on one transverse side of the modified atmosphere module, so that the gas in the modified atmosphere space flows into the fan through one side of the hollow part, is blown to the modified atmosphere module by the fan and then flows back to the modified atmosphere space from the other side of the hollow part.

6. The drawer assembly of claim 5, wherein

A gap is arranged between the top of the modified atmosphere component and the housing to allow airflow to pass through; and is

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 barrel, and two ends of the air guide channel respectively face the air outlet of the fan and the air-conditioning membrane assembly.

7. the drawer assembly of claim 4, wherein

the gas-regulating membrane assembly also comprises a supporting frame, a first oxygen-enriched gas collecting cavity and a second oxygen-enriched gas collecting cavity, wherein the supporting frame is provided with a first surface and a second surface which are parallel to each other, and a plurality of gas flow channels which penetrate through the supporting frame to communicate the first surface with the second surface are formed on the supporting frame; and is

The at least one modified atmosphere film is two planar modified atmosphere films which are respectively laid on the first surface and the second surface of the supporting frame.

8. A refrigerator-freezer comprising a drawer assembly according to any of claims 1 to 7.