CN116164477A

CN116164477A - Refrigerating and freezing device

Info

Publication number: CN116164477A
Application number: CN202310288479.2A
Authority: CN
Inventors: 刘浩泉; 姜波; 王磊; 辛若武
Original assignee: Haier Smart Home Co Ltd
Current assignee: Haier Smart Home Co Ltd
Priority date: 2016-12-02
Filing date: 2016-12-02
Publication date: 2023-05-26
Also published as: CN106556207A

Abstract

The present invention provides a refrigerating and freezing device, comprising: the box body is internally limited with a storage space, and a storage container is arranged in the storage space; the high-oxygen fresh-keeping space is arranged in the storage container and is configured to be in a gas atmosphere with oxygen-enriched gas, and the high-oxygen fresh-keeping space with the oxygen-enriched gas atmosphere beneficial to meat fresh keeping is creatively added in the refrigerating and freezing device, so that the problem of meat nutrition loss in the existing meat refrigerating technology is creatively solved, and the high-oxygen fresh-keeping space ensures that the meat quality, color and nutrition of meat are not lost by improving the oxygen content in the meat storage space.

Description

Refrigerating and freezing device

The present application is a divisional application of patent application with the name of "refrigerating and freezing device" having the application date of 2016, 12, 02 and 201611096969.9.

Technical Field

The invention relates to the technical field of refrigerator storage, in particular to a refrigeration and freezing device.

Background

Refrigerators are a kind of refrigerating apparatus that maintains a constant low temperature, and also a kind of civil products that maintain foods or other objects in a constant low temperature cold state. With the improvement of life quality, the consumer demand for preservation of stored foods is also increasing, and especially the demands for color, taste and the like of foods are also increasing. Therefore, the stored food should also ensure that the color, mouthfeel, freshness, etc. of the food remain as unchanged as possible during storage.

The fresh-keeping performance of the refrigerator can be improved greatly by using the air-conditioning technology in the refrigerator, but the optimal gas components corresponding to different food materials are different, for example, fresh fruits and vegetables need lower oxygen concentration to inhibit aerobic respiration, so that the consumption of the self nutrient substances by respiration is reduced; for fresh beef, mutton, pork and the like, the oxygen concentration (namely high oxygen) in the air is required to be higher than that of the fresh beef, mutton, pork and the like, the gas state in the fresh pork package in the food packaging industry is in an oxygen-enriched state, and the oxygen concentration is generally far higher than that in normal air, so that the color and luster of the meat and nutrition of the meat can be kept for a long time without loss.

The air conditioning technology used by the existing refrigerator is mainly applied to reducing the oxygen concentration, but the means for refrigerating and preserving fresh meat is needed to solve the technical problem in the field.

Disclosure of Invention

An object of the present invention is to solve the above-mentioned drawbacks of the prior art and to provide a refrigerating and freezing apparatus having a high oxygen fresh-keeping space for keeping meat fresh therein, so as to ensure that the color and luster of meat and nutrition of meat stored therein are not lost.

A further object of the first aspect of the present invention is to provide an oxygen generating apparatus which is small in size, high in strength, and remarkable in oxygen generating effect.

Another further object of the present invention is to provide a gas conditioning apparatus which can provide an oxygen-enriched gas atmosphere for meats and the like stored in a refrigerating and freezing device, and which can provide a nitrogen-enriched and oxygen-depleted gas atmosphere for vegetables and fruits and the like stored therein.

In particular, the present invention provides a refrigeration and freezer comprising:

the box body is internally provided with a storage space, and a storage container is arranged in the storage space; and

the high-oxygen fresh-keeping space is arranged in the storage container and is configured into a gas atmosphere with oxygen-enriched gas therein.

Optionally, the refrigerating and freezing device further comprises:

an air extraction assembly in communication with the high oxygen fresh-keeping space configured to extract at least a portion of the gas within the high oxygen fresh-keeping space;

and the oxygen-enriched gas supply device is in controlled communication with the high-oxygen fresh-keeping space so as to supply the oxygen-enriched gas to the high-oxygen fresh-keeping space, so that the oxygen content in the high-oxygen fresh-keeping space reaches a content threshold value.

Optionally, the storage container is a drawer assembly, including:

the drawer cylinder is provided with a forward opening and is arranged in the storage space; and

a drawer body slidably mounted within the drawer cylinder for operative outward extraction from the forward opening of the drawer cylinder and inward insertion into the drawer cylinder.

Optionally, at least two communication holes are formed on the wall of the rear side of the drawer cylinder, wherein two communication holes are respectively a first communication hole for discharging the gas in the high-oxygen fresh-keeping space, and a second communication hole for allowing the oxygen-enriched gas in the oxygen-enriched gas supply device to enter the high-oxygen fresh-keeping space.

Optionally, the air extraction component is arranged outside the wall of the rear side of the drawer cylinder, the air extraction component is provided with an air extraction pump, and the air inlet end of the air extraction pump is connected to the first communication hole;

the exhaust end of the oxygen-enriched gas supply device is connected to the second communication hole.

Optionally, the front opening of the drawer cylinder has an opening outer edge extending towards the outside of the drawer cylinder on a plane perpendicular to the sliding direction of the drawer body, and the opening outer edge has a plurality of positioning holes arranged at intervals;

at least one horizontal strip-shaped bulge is arranged on the outer surfaces of the cylinder walls of the two sides of the drawer cylinder body.

Optionally, the drawer assembly further comprises:

an opening outer frame covering the opening outer edge in a sliding direction perpendicular to the drawer body, wherein one side of the opening outer frame facing the opening outer edge is provided with a plurality of extending columns arranged at intervals, and the extending columns are configured to be matched with the positioning holes so that the opening outer frame is arranged on the opening outer edge;

the two lateral heat-insulating partition plates are respectively positioned at the left side and the right side of the drawer cylinder, at least one horizontal strip-shaped groove is respectively formed in the surface of the two lateral heat-insulating partition plates, facing one side of the drawer cylinder, of the two lateral heat-insulating partition plates, the number of the strip-shaped grooves is the same as that of the strip-shaped protrusions, and the strip-shaped grooves are configured to be matched with the strip-shaped protrusions so that the two lateral heat-insulating partition plates are correspondingly arranged at the left side and the right side of the drawer cylinder;

the top heat preservation partition board and the bottom heat preservation partition board are respectively and horizontally arranged at the top and the bottom of the drawer cylinder body so as to preserve heat of the high-oxygen fresh-keeping space.

Optionally, the content threshold is any oxygen content value within 21% -70%.

Optionally, the oxygen-enriched gas providing device is an air-conditioning membrane assembly, the air-conditioning membrane assembly is provided with at least one air-conditioning membrane layer and an oxygen-enriched gas collecting cavity, the oxygen-enriched gas collecting cavity is communicated with the high-oxygen fresh-keeping space, the air-conditioning membrane assembly is configured to enable oxygen in the space gas around the air-conditioning membrane assembly to penetrate through the air-conditioning membrane layer more than nitrogen in the space gas around the air-conditioning membrane assembly so as to form the oxygen-enriched gas in the oxygen-enriched gas collecting cavity, and the oxygen-enriched gas flows to the high-oxygen fresh-keeping space through the oxygen-enriched gas collecting cavity.

Optionally, the oxygen-enriched gas supply device is an oxygen bottle, and the oxygen bottle is in controlled communication with the high-oxygen fresh-keeping space so as to supply the oxygen-enriched gas to the high-oxygen fresh-keeping space, so that the oxygen content in the high-oxygen fresh-keeping space reaches the content threshold.

The refrigerating and freezing device creatively adds the high-oxygen fresh-keeping space with the oxygen-enriched gas atmosphere which is beneficial to meat fresh-keeping, thereby creatively solving the problem of meat nutrition loss in the existing meat refrigerating technology.

Furthermore, the refrigerating and freezing device has good fresh-keeping effect, low requirements on rigidity and strength of a storage container and the like, low realization requirements and low cost. The refrigerating and freezing device of the invention has small volume and low noise, and is especially suitable for families and individuals.

Furthermore, the refrigerating and freezing device of the invention can improve the sealing property of the high-oxygen fresh-keeping space by arranging the high-oxygen fresh-keeping space in the drawer-type storage container, further ensures the utilization rate of oxygen-enriched gas filled in the high-oxygen fresh-keeping space and improves the fresh-keeping effect of meat in the high-oxygen fresh-keeping space.

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 front view of a refrigerated freezer according to one embodiment of the invention;

FIG. 2 is a schematic block diagram of a storage container according to one embodiment of the present invention;

FIG. 3 is a schematic rear view of a storage container according to one embodiment of the invention;

FIG. 4 is a schematic block diagram of a refrigeration and freezer according to one embodiment of the invention;

FIG. 5 is a schematic exploded view of a suction assembly according to one embodiment of the present invention;

FIG. 6 is a schematic exploded view of a storage container according to one embodiment of the invention;

FIG. 7 is another angular schematic exploded view of a storage container according to one embodiment of the invention;

fig. 8 is an exploded view of an air conditioning membrane assembly in a refrigeration and chiller according to one embodiment of the present invention.

Detailed Description

Fig. 1 is a schematic front view of a refrigerated freezer according to one embodiment of the invention. As shown in FIG. 1, an embodiment of the present invention provides a refrigeration and freezer 10 that may include a cabinet 20, a main door, a high oxygen fresh space 210, and a refrigeration system.

The case 20 may define a storage space 200 therein. For example, the tank 20 may include a liner, and the storage space 200 and the compressor chamber are defined by the liner. The main door is rotatably installed at the case 20 and configured to open or close the storage space 200 defined by the case 20. 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 installed in the compressor bin. The evaporator is configured to provide cooling directly or indirectly into the storage space 200. For example, when the refrigerating and freezing apparatus 10 is a household compression type direct-cooling refrigerator, the evaporator may be disposed outside or inside the rear wall surface of the inner container. When the refrigerating and freezing device 10 is a domestic compressed air-cooled refrigerator, the interior of the box 20 is also provided with an evaporator chamber, the evaporator chamber is communicated with the storage space 200 through an air path system, an evaporator is arranged in the evaporator chamber, and a fan is arranged at the outlet of the evaporator chamber so as to circularly refrigerate the storage space 200.

In particular, the storage space 200 may further be provided with a storage container 21, and the storage container 21 has a high-oxygen fresh-keeping space 210 therein. The high oxygen fresh space 210 may be a closed space or a near closed space. The high oxygen fresh space 210 can be configured as a gas atmosphere having an oxygen-enriched gas therein. In some embodiments of the present invention, the storage space 200 is a refrigerated space, which is stored at a temperature generally between 2 ℃ and 10 ℃, preferably between 3 ℃ and 8 ℃.

Those skilled in the art will appreciate that normal air components include (in volume percent, hereinafter the same): about 78% nitrogen, about 21% oxygen, about 0.939% noble gases (helium, neon, argon, krypton, xenon, radon), 0.031% carbon dioxide, and 0.03% other gases and impurities (e.g., ozone, nitric oxide, nitrogen dioxide, water vapor, etc.). Here, it is known to those skilled in the art that the oxygen-enriched gas in the high oxygen fresh-keeping space 210 of the present invention refers to a gas having an oxygen content exceeding that of the normal air, for example, the oxygen content thereof may be 21% to 70%, or even higher; the fresh-keeping gas atmosphere of the oxygen-enriched gas is the gas atmosphere with the oxygen content exceeding the oxygen content in the normal air. Accordingly, the nitrogen-rich gas refers to a gas having a nitrogen content exceeding the nitrogen content in the above-mentioned normal air.

Thus, the refrigerating and freezing device 10 of the invention creatively solves the problem of meat nutrition loss in the existing meat refrigerating technology by creatively adding the high-oxygen fresh-keeping space 210 with the oxygen-enriched gas atmosphere beneficial to meat fresh-keeping, and the high-oxygen fresh-keeping space 210 ensures that meat quality, color and nutrition of meat are not lost by improving the oxygen content in the meat storage space.

In some embodiments of the present invention, to allow the oxygen content within the high oxygen fresh space 210 to be adjusted as desired by the user, the refrigeration chiller 10 may further include a pumping assembly 40 and an oxygen-enriched gas supply 30. The evacuation assembly 40 is configured to communicate with the high oxygen fresh space 210 to evacuate at least a portion of the gas within the high oxygen fresh space 210, thereby creating a negative pressure within the high oxygen fresh space 210. The oxygen-enriched gas supply device 30 is configured to be in controlled communication with the high-oxygen fresh-keeping space 210 to supply oxygen-enriched gas to the high-oxygen fresh-keeping space 210, thereby causing the oxygen content within the high-oxygen fresh-keeping space 210 to reach the content threshold.

That is, after the user takes out or puts the articles into the high-oxygen fresh space 210, the gas atmosphere in the high-oxygen fresh space 210 is exchanged with the external ambient air due to the opening of the storage container 21. At this point, the pumping assembly 40 may be controlled to activate such that the gas within the high oxygen fresh space 210 is exhausted through the pumping assembly 40. Then, the air extraction assembly 40 can be controlled to stop, the oxygen-enriched gas supply device 30 can be in controlled communication with the high-oxygen fresh-keeping space 210, and the oxygen-enriched gas in the oxygen-enriched gas supply device 30 can flow into the high-oxygen fresh-keeping space 210 due to the negative pressure in the high-oxygen fresh-keeping space 210. Further, the pumping assembly 40 may include a pumping pump 41. The operating time of the pumping assembly 40 may be dependent on the displacement of the pumping pump 41 used and the oxygen content required for the high oxygen fresh space 210. For example, when the required oxygen content is relatively high, the operation time of the pump 41 may be appropriately prolonged to reduce the gas pressure in the high oxygen fresh space 210 to be able to inhale more oxygen-enriched gas.

Further, the specific oxygen content in the high oxygen fresh space 210 can be determined by integrating the type and quality of meat stored therein. The higher oxygen content can provide more sufficient oxygen for myoglobin of meat, prolong the fresh-keeping time of the meat and improve the storage and fresh-keeping effects of the refrigeration and freezing device 10 on the meat. However, considering that any meat has a certain preservation time, an excessively high oxygen content may cause unnecessary oxygen consumption and increase the preservation cost, so in some embodiments of the present invention, the oxygen content in the high oxygen preservation space 210 may be set to any oxygen content value between 21% and 70%, and specific oxygen content values may be 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70% and so on. Preferably, the oxygen content value can be selected to be any one of 67-70%, so that the storage cost can be reduced, the energy can be saved and the consumption can be reduced on the premise of providing enough oxygen-enriched gas for meat so as to prolong the preservation time of the meat.

Fig. 2 is a schematic structural view of a storage container 21 according to an embodiment of the present invention. Fig. 3 is a schematic rear view of a storage container 21 according to one embodiment of the invention. As shown in fig. 2 and 3, in some embodiments of the present invention, the storage container 21 may be a drawer assembly in order to improve the tightness of the high-oxygen fresh-keeping space 210. The storage container 21 may include a drawer cylinder 22 and a drawer body 23. The drawer cylinder 22 may have a forward opening and be disposed in the storage space 200, and in particular, may be disposed at a lower portion of the storage space 200. As will be appreciated by those skilled in the art, the drawer cylinder 22 may also be disposed in a middle or upper portion of the storage space 200. The drawer body 23 is slidably disposed within the drawer cylinder 22 to operatively withdraw from a forward opening of the drawer cylinder 22 and insert the drawer cylinder 22 inwardly. The drawer body 23 may have a drawer end cap that may be mated with the opening of the drawer cylinder 22 to seal the high oxygen fresh space 210. In some alternative embodiments, the storage container 21 may include a barrel and a small door configured to open or close the barrel.

In some embodiments of the present invention, at least two communication holes may be provided on the rear side cylinder wall of the drawer cylinder 22. Two of the communication holes may be a first communication hole 221 for discharging the gas in the high oxygen storage space 210 and a second communication hole 222 for allowing the oxygen-enriched gas in the oxygen-enriched gas supply device 30 to enter the high oxygen storage space 210, respectively. In addition, the drawer cylinder 22 may be provided with a third communication hole for sending the cooling air flow generated by the refrigerating system into the high-oxygen fresh-keeping space 210 for refrigerating. That is, the first communication hole 221 may be used to connect with an intake end of the suction pump 41 provided in the suction assembly 40, and the second communication hole 222 may be used to connect with an exhaust end of the oxygen-enriched gas supply device 30. Specifically, the pumping assembly 40 may further include a seal box 43, and the pumping pump 41 may be installed within the seal box 43. The sealing box 43 may be disposed outside the rear wall of the drawer cylinder 22 and located at the position of the first communication hole 221, that is, the first communication hole 221 may be disposed in a projection range of the sealing box 43 of the air extraction assembly 40 on the rear wall of the drawer cylinder 22, so as to shorten a distance between the air pump 41 and the first communication hole 221, and separate the pipeline from other internal structures in the storage space 200 through the sealing box 43, so as to improve stability of the pipeline.

Fig. 4 is a schematic structural view of a refrigerating and freezing apparatus according to an embodiment of the present invention. In other embodiments of the invention, as shown in FIG. 4, a bleed assembly 40 may also be provided within the compressor compartment. The compressor compartment may be provided at a rear lower portion of the case 20. Specifically, the bleed assembly 40 may be disposed at one end of the compressor housing. The compressor may be positioned at the other end of the compressor compartment to provide a relatively large distance of the suction assembly 40 from the compressor, reducing noise and waste heat buildup. For example, the bleed assembly 40 may be disposed at an end of the compressor housing adjacent the pivoting side of the main door. When the refrigeration and freezer 10 is a side-by-side refrigerator, the air extraction assembly 40 may be positioned at either end of the compressor compartment. In other embodiments of the present invention, the extraction assembly 40 is disposed adjacent the compressor, and the extraction assembly 40 is disposed at one end of the compressor compartment and between the compressor and the side wall of the compressor compartment. At this time, the air inlet end of the air extraction assembly 40 may be in communication with the oxygen-enriched fresh-keeping space 210 through a pipeline. In particular, the pipeline may comprise a vertical pipe section. The vertical pipe section is arranged at the rear of the storage space 200, the lower end of the vertical pipe section is communicated with the inlet of the air extraction assembly 40, and the upper part of the vertical pipe section is communicated with the first communication hole 221 of the high-oxygen fresh-keeping space 210. The vertical pipe section can be arranged close to the side shell and the back plate in the box body 20, the vertical pipe section can be sleeved with a heat preservation sleeve or a heat preservation pipe, cold energy in oxygen in the vertical pipe section can be prevented from being transferred to the side shell and the back plate, and condensation can be prevented from being generated.

FIG. 5 is a schematic exploded view of a suction assembly 40 according to one embodiment of the present invention. As shown in FIG. 5, in some embodiments of the invention, the extraction assembly 40 may further include a mounting base plate 42. The mounting plate 42 may be mounted to the bottom surface of the compressor cartridge by a plurality of vibration dampening footpads. The seal case 43 is mounted to the mounting base plate 42. The suction pump 41 is mounted in the seal box 43. That is, the suction pump 41 may be disposed inside a sealing case 43, and the sealing case 43 may be installed in the compressor compartment through the installation base plate 42. The seal box 43 may largely block noise and/or waste heat from propagating outward when the suction pump 41 is in operation. Further, in order to enhance the vibration/noise reduction effect, a plurality of vibration/noise reduction pads (may be made of rubber) may be mounted on the mounting base plate 42. The number of vibration damping foot pads is preferably four, and the four vibration damping foot pads are mounted in foot pad mounting holes formed at four corners of the mounting base plate 42.

In some embodiments of the present invention, a mounting frame is disposed inside the sealing box 43, and the mounting frame is connected to the inner wall of the sealing box 43 through a plurality of vibration-reducing pads, and the suction pump 41 is fixed inside the mounting frame, so as to reduce vibration and noise during operation of the suction pump 41. 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 43. 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 43. And the other two opposite sides of the mounting frame are respectively fixed with a vibration reduction cushion block. The suction pump 41 may be located between the respective vibration reduction pads within the seal box 43 and secured to the mounting frame by screws.

In some embodiments of the present invention, the oxygen-enriched gas providing device 30 may be an oxygenerator. Further, the oxygenerator may be an air-conditioning membrane module. The air-conditioning membrane component is provided with at least one air-conditioning membrane layer and an oxygen-enriched gas collecting cavity. The air-conditioning membrane layer may be composed of two air-conditioning membranes 31, and the air-conditioning membranes 31 may preferably be oxygen-enriched membranes.

The oxygen-enriched membrane is permeable to all gases, except for different gases having different degrees of permeation. The permeation of gas through an oxygen-enriched membrane is a complex process, and the permeation mechanism is generally that gas molecules are firstly adsorbed on the surface of the oxygen-enriched membrane to be dissolved, then are diffused in the oxygen-enriched membrane, and finally are desorbed from the other side of the oxygen-enriched membrane. The oxygen-enriched membrane separation technology relies on the difference of dissolution and diffusion coefficients of different gases in the oxygen-enriched membrane to realize the separation of the gases. When the mixed gas is acted by a certain driving force (pressure difference or pressure ratio at two sides of the oxygen-enriched membrane), gas with relatively high permeation rate such as oxygen, hydrogen, helium, hydrogen sulfide, carbon dioxide and the like permeates the oxygen-enriched membrane, and then is enriched at the permeation side of the oxygen-enriched membrane, and gas with relatively low permeation rate such as nitrogen, carbon monoxide and the like is enriched at the retention side of the oxygen-enriched membrane, so that the aim of separating the mixed gas is fulfilled.

Specifically, the inner side surface of each of the air-conditioning membranes 31 may be disposed toward the oxygen-enriched gas collection chamber so as to allow the gas such as oxygen having a relatively high permeation rate in the air of the outer space of the air-conditioning membrane module to permeate through at least one of the air-conditioning membranes 31 into the oxygen-enriched gas collection chamber when the pressure of the oxygen-enriched gas collection chamber is smaller than the pressure of the outer space of the air-conditioning membrane module. When the air-conditioning membrane assembly is arranged, the other side of the air-conditioning membrane 31 can be directly contacted with the storage space 200, so that at least part of oxygen in the air in the storage space 200 can enter the oxygen-enriched gas collection cavity through the oxygen-enriched membrane layer 31 when the pressure of the oxygen-enriched gas collection cavity is smaller than the pressure of the storage space 200. Further, the oxygen-enriched gas collection chamber is configured to communicate with the high-oxygen fresh-keeping space 210 such that the oxygen-enriched gas formed in the oxygen-enriched gas collection chamber flows into the high-oxygen fresh-keeping space 210. The air-conditioning membrane assembly can also be arranged in the compressor bin, and the oxygen-enriched gas collection cavity of the air-conditioning membrane assembly is communicated with the high-oxygen fresh-keeping space 210 through a pipeline so as to supply oxygen-enriched gas to the high-oxygen fresh-keeping space 210, so that the oxygen content in the high-oxygen fresh-keeping space 210 reaches a content threshold value.

In some embodiments of the present invention, the storage space 200 on the other side of the at least one modified atmosphere film 31 may be correspondingly provided with a nitrogen-rich gas collection chamber to collect gases such as nitrogen, which have a relatively slow permeation rate, and form a nitrogen-rich gas. The nitrogen-rich gas can be supplied into the controlled atmosphere fresh-keeping space for fruits and vegetables in the gas atmosphere needing nitrogen-rich and oxygen-poor by the controlled atmosphere membrane assembly, so that controlled atmosphere fresh keeping of different articles is realized on the premise of not adding additional controlled atmosphere membrane assemblies.

In other embodiments of the present invention, the oxygen-enriched gas supply device 30 may also be an oxygen cylinder. In particular, the oxygen cylinder is used to supply oxygen-enriched gas to the high-oxygen fresh-keeping space 210, and the oxygen cylinder needs a smaller installation space and can be directly arranged on the outer side of the rear side cylinder wall of the drawer cylinder 22. And the oxygen bottle has a simple structure, and the oxygen bottle or a communicating pipeline between the oxygen bottle and the high-oxygen fresh-keeping space 210 can be replaced in time without complex installation or disassembly operation, thereby providing convenience for users. The oxygen cylinder may be controlled by an electromagnetic valve to open to supply oxygen-enriched gas to the high oxygen fresh space 210. Of course, as those skilled in the art will appreciate, other suitable control switches may be used to control the opening and closing of the oxygen cylinder, and thus will not be described in detail herein.

In some embodiments of the present invention, to achieve more precise control of the compartment environment of the high oxygen fresh space 210, the refrigeration chiller 10 may also include a temperature detection device 80. The temperature detecting device 80 may be disposed in an inwardly recessed receiving groove on the rear side wall of the drawer cylinder 22 and configured to detect the compartment temperature of the high-oxygen fresh-keeping space 210. In other embodiments of the present invention, the temperature detecting device 80 may also be disposed inside the high oxygen fresh space 210. For example, it may be provided on the inner wall of the drawer body 23 or the drawer cylinder 22 in an embedded manner.

In some embodiments of the present invention, the refrigerator-freezer 10 may also include an oxygen content detection device. Specifically, the oxygen concentration detection device may be disposed inside the high-oxygen fresh-keeping space 210. Preferably, the oxygen concentration detection means may be provided on the inner wall of the drawer body 23 or the drawer cylinder 22 remote from the second communication hole 222 to obtain a more accurate oxygen concentration. Thus, the opening and closing of the oxygen-enriched gas supply device 30 can be more accurate, and no shortage or waste of oxygen-enriched gas is caused.

In some embodiments of the present invention, the refrigeration and freezer 10 can also include a gas pressure detection device. The gas pressure detection device may be disposed in the oxygen-enriched fresh-keeping space 210. When the air extraction assembly 40 promotes the air in the high-oxygen fresh-keeping space 210 to flow out, the pressure detection device timely and accurately detects the air pressure in the high-oxygen fresh-keeping space 210, so that the opening and closing of the air extraction assembly 40 can be more accurate, and the problem that the air pressure in the high-oxygen fresh-keeping space 210 is too high to enable oxygen-enriched air to enter or the air pressure in the high-oxygen fresh-keeping space 210 is too low to enable the structure of the drawer assembly to be unstable can be avoided.

In some embodiments of the present invention, the storage container 21 also has at least one air pressure equalizing vent that is controllably openable to raise or lower the pressure within the high oxygen fresh space 210 to the same pressure as the air outside thereof. Specifically, after the refrigerating and freezing device 10 completes the operations of exhausting the high-oxygen fresh-keeping space 210 and filling the oxygen-enriched gas, the high-oxygen fresh-keeping space 210 is still in a negative pressure state, so as to ensure the tightness between the drawer body 23 and the drawer cylinder 22 and enhance the storage effect. This negative pressure condition may make it difficult for a user to pull the drawer body 23 open when access to the items is desired. According to the invention, the air pressure balance vent holes capable of being controlled to be opened are arranged on the storage container 21, so that when a user pulls the drawer body 23 open when the user needs, the air pressure in the high-oxygen fresh-keeping space 210 is balanced with the air pressure outside the high-oxygen fresh-keeping space, and the user can take out or put in the articles more easily.

Fig. 6 is a schematic exploded view of a storage container 21 according to one embodiment of the present invention. Fig. 7 is another angular schematic exploded view of a storage container 21 according to one embodiment of the invention. As shown in fig. 6 and 7, in some embodiments of the present invention, to further enhance the sealability of the high-oxygen fresh-keeping space 210 and the structural strength of the storage container 21, the drawer cylinder 22 may further have an opening outer edge 223 extending toward the outside of the drawer cylinder 22 along a forward opening thereof on a plane perpendicular to the sliding direction of the drawer body 23. A plurality of spaced apart locating holes 224 may be provided on the opening outer edge 223. Because the opening outer edge 223 is additionally arranged at the opening of the drawer cylinder 22, when the drawer body 23 is inserted into the drawer cylinder 22, the contact area between the forward opening of the drawer cylinder 22 and the drawer end cover of the drawer body 23 is increased, so that the high-oxygen fresh-keeping space 210 can be better sealed. Further, the drawer assembly may also include an open outer frame 225. The opening outer frame 225 may cover the opening outer edge 223 in a sliding direction perpendicular to the drawer body 23. That is, the opening outer frame 225 is provided to be identical to the opening shape of the drawer cylinder 22, and the width of each side of the opening outer frame 225 may be identical to the width of the side of the corresponding opening outer edge 223, and a plurality of extension posts 226 may be provided at positions corresponding to the plurality of positioning holes 224 on the opening outer edge 223 at a side facing the opening outer edge 223 for installation and positioning of the opening outer frame 225, and since the opening outer frame 225 and the opening outer edge 223 are fastened by the plurality of sets of the extension posts 226 and the positioning holes 224 which are provided at intervals, the strength of the drawer cylinder 22 is further enhanced.

In other embodiments of the present invention, the opening frame 225 may also be made of an elastic material. Therefore, when the drawer body 23 and the drawer cylinder 22 are mutually extruded due to the negative pressure in the high-oxygen fresh-keeping space 210, the opening outer frame 225 can be used as a buffer to protect the drawer body and the drawer cylinder 22, and the deformation of the opening outer frame 225 caused by extrusion can eliminate the gap possibly occurring between the drawer cylinder 22 and the drawer body 23 due to the adoption of elastic materials, so that the sealing performance of the drawer assembly is further improved.

In some embodiments of the invention, the drawer assembly may further include two lateral insulating baffles 24, a top insulating baffle 25, and a bottom insulating baffle 26. The two lateral heat-insulating partitions 24 are respectively located at the left side and the right side of the drawer cylinder 22, and at least one horizontal strip-shaped groove 247 is respectively arranged on the surfaces of the two lateral heat-insulating partitions 24 facing the drawer cylinder 22. Accordingly, at least one horizontal bar-shaped protrusion 227 may be provided on the outer surface of the both side walls of the drawer cylinder 22. The number of the grooves on the lateral heat-insulating partition plates 24 is the same as that of the bulges on the two sides of the drawer cylinder 22, and the positions are in one-to-one correspondence, so as to be used for positioning the mounting positions of the two lateral heat-insulating partition plates 24 on the two sides of the drawer cylinder 22. In some embodiments of the present invention, the ribs and grooves may be provided with an interference fit to enhance the stability of the installation of the insulating barrier.

The top and bottom

thermal insulation partitions

25 and 26 are horizontally disposed at the top and bottom of the drawer cylinder 22, respectively. And the upper side of the top thermal insulation partition 25 and the lower side of the bottom thermal insulation partition 26 may be further provided with a top installation partition 71 and a bottom installation partition 72, and the top installation partition 71 and the bottom installation partition 72 may be made of plastic to separate the top thermal insulation partition 25 and the bottom thermal insulation partition 26 from other structures in the storage space 200, thereby protecting the thermal insulation partitions. Further, the edges of the two mounting partitions near the rear side wall of the drawer cylinder 22 may be extended at intervals perpendicularly to the mounting partitions and have a through hole along the center toward the drawer cylinder 22 for fixing the two mounting partitions to the drawer cylinder 22 by screws.

In some embodiments of the present invention, the overall thickness of top thermal barrier 25 and top mounting barrier 71 may be less than or equal to the height of opening outer edge 223 extending outward of drawer cylinder 22, such that when top thermal barrier 25 and top mounting barrier 71 are mounted, the sides of both adjacent opening outer edge 223 may be positioned against opening outer edge 223.

Fig. 8 is an exploded view of an air conditioning membrane assembly in a refrigeration and chiller according to one embodiment of the present invention. As shown in fig. 8, in some embodiments of the invention, the air regulating membrane assembly may be in the form of a flat plate, which may further include a support frame 32. The number of the air-conditioning membranes 31 can be two, and the two air-conditioning membranes 31 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 rib plates and/or the flat plates can improve the structural strength of the air-conditioning membrane assembly and the like. That is, the support frame 32 has a first surface and a second surface disposed opposite to each other, and at least one air flow passage communicating with the first surface and the second surface is formed inside. Two air-conditioning membranes 31 are respectively disposed on the first and second surfaces of the support frame 32 to define, in combination with at least one gas flow channel of the support frame 32, an oxygen-enriched gas collection chamber.

In some embodiments of the present invention, the support frame 32 includes a gas extraction aperture 33 in communication with the at least one gas flow channel and positioned on the rim to allow oxygen in the oxygen-enriched gas collection chamber to be output. The suction hole 33 communicates with the second communication hole 222. 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 passage formed inside the support frame 32 may be one or more cavities communicating with the air suction holes 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.

In some embodiments of the present invention, locking means, handles and handle positioning means may also be provided between the drawer body 23 and the drawer cylinder 22. The locking device comprises a pivot lock catch arranged at two sides of the drawer end cover, two buckling parts arranged on the drawer cylinder 22, and a clamping promotion device. Each of the fastening portions may be a protrusion. The locking and urging device may be configured to urge the two pivoting latches to rotate in directions (i.e., respective first directions) in which the two pivoting latches are locked to the respective corresponding locking portions. The handle extends horizontally and is slidably mounted to the drawer end cap in a vertical direction. Also, the handle may be in an initial position when the drawer body 23 is in a closed state. And the handle is configured such that, in its initial position, both ends thereof are respectively brought into contact with and abut against the two pivoting catches to prevent each pivoting catch from rotating in the other direction opposite to the respective first direction, so that the pivoting catches are kept in engagement with the engaging portions, thereby locking the drawer body 23 to the drawer cylinder 22. Further, when the handle is moved up or down to the unlock position, i.e., from the initial position to the unlock position, each of the pivoting latches may be allowed to rotate in the other direction opposite to the respective first direction to allow the pivoting latches to rotate out of the corresponding snap-fit portions when the drawer body 23 is pulled outward, thereby allowing the drawer body 23 to be opened. The handle positioning means is configured to hold the handle in a respective predetermined position, mainly an initial position and an unlock position, after the handle is moved to that position. When opening the drawer body 23, the user first moves the handle up or down to the unlock position, the handle positioning means holds the handle in that position, and the user can pull the drawer body 23 outward. When closing the drawer body 23, the user first closes the drawer body 23 and then returns the handle downward or upward to the original position, and the handle positioning means holds the handle in this position, thereby holding the drawer body 23 and the drawer cylinder 22 in a locked state.

In order to further stabilize the movement of the handle, two ends of the handle are also respectively provided with a guide rod and a sliding block, and the guide rods extend along the vertical direction. The drawer body 23 further comprises two sets of slides, each set of slides having at least three runners extending in a vertical direction, such that one runner is provided on each side of the guide bar, the slide block moves on the remaining runners, or one runner is provided on each side of the slide block, and the guide bar moves on the remaining runners. For example, each set of slides may include four slides, one on each of the front and rear sides of the guide bar, and one on each of the lateral sides (i.e., left and right sides) of the slider.

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 refrigerated chiller comprising:

the box body is internally provided with a storage space, and a storage container is arranged in the storage space;

the high-oxygen fresh-keeping space is arranged in the storage container and is configured into a gas atmosphere with oxygen-enriched gas therein; and

2. The refrigerating and freezing apparatus according to claim 1, wherein,

the storage container is a drawer assembly comprising:

3. The refrigerating and freezing apparatus according to claim 2, wherein,

at least two communication holes are formed in the wall of the rear side of the drawer cylinder, wherein the two communication holes are respectively a first communication hole for discharging the gas in the high-oxygen fresh-keeping space, and a second communication hole for allowing the oxygen-enriched gas in the oxygen-enriched gas supply device to enter the high-oxygen fresh-keeping space.

4. The refrigeration and freezer of claim 3, further comprising:

a gas extraction assembly in communication with the high oxygen fresh space configured to extract at least a portion of the gas within the high oxygen fresh space, wherein

The air extraction assembly is arranged outside the wall of the rear side of the drawer cylinder body, and is provided with an air extraction pump, and the air inlet end of the air extraction pump is connected to the first communication hole;

5. The refrigerating and freezing apparatus according to claim 4, wherein,

the air extraction assembly further comprises a sealing box and a plurality of shock absorbing cushion blocks,

a mounting frame is arranged in the sealing box and is connected with the inner wall of the sealing box through a plurality of vibration reduction cushion blocks;

the suction pump is fixed inside the mounting frame.

6. The refrigerating and freezing apparatus according to claim 2, wherein,

the front opening of the drawer cylinder body is provided with an opening outer edge extending towards the outside of the drawer cylinder body on a plane perpendicular to the sliding direction of the drawer body, and the opening outer edge is provided with a plurality of positioning holes which are arranged at intervals;

7. The refrigeration and freezer of claim 6, wherein the drawer assembly further comprises:

8. The refrigerating and freezing apparatus according to claim 1, wherein,

the content threshold is any oxygen content value within 21% -70%.

9. The refrigeration and freezer of claim 1, wherein:

the oxygen-enriched gas supply device is an air-conditioning membrane assembly, the air-conditioning membrane assembly is provided with at least one air-conditioning membrane layer and an oxygen-enriched gas collection cavity, the oxygen-enriched gas collection cavity is communicated with the high-oxygen fresh-keeping space, and the air-conditioning membrane assembly is configured to enable oxygen in the air in the space around the air-conditioning membrane assembly to penetrate through the air-conditioning membrane layer more than nitrogen in the air in the space around the air-conditioning membrane assembly so as to form the oxygen-enriched gas in the oxygen-enriched gas collection cavity, and enable the oxygen-enriched gas to flow to the high-oxygen fresh-keeping space through the oxygen-enriched gas collection cavity.

10. The refrigerating and freezing apparatus according to claim 1, wherein,

the oxygen-enriched gas supply device is an oxygen bottle which is controllably communicated with the high-oxygen fresh-keeping space so as to supply the oxygen-enriched gas to the high-oxygen fresh-keeping space, so that the oxygen content in the high-oxygen fresh-keeping space reaches the content threshold value.