CN106839586B - Refrigerating and freezing device - Google Patents
Refrigerating and freezing device Download PDFInfo
- Publication number
- CN106839586B CN106839586B CN201611132102.4A CN201611132102A CN106839586B CN 106839586 B CN106839586 B CN 106839586B CN 201611132102 A CN201611132102 A CN 201611132102A CN 106839586 B CN106839586 B CN 106839586B
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- air
- pump
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- oxygen
- conditioning
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D25/00—Charging, supporting, and discharging the articles to be cooled
- F25D25/02—Charging, supporting, and discharging the articles to be cooled by shelves
- F25D25/024—Slidable shelves
- F25D25/025—Drawers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/04—Treating air flowing to refrigeration compartments
Abstract
The invention provides a refrigerating and freezing device. The refrigerating and freezing device comprises: the box body is provided with an inner container, a shell and a heat preservation layer; the inner container is internally provided with a storage space, a storage container is arranged in the storage space, and an air-conditioning fresh-keeping space is arranged in the storage container; the air-conditioning membrane assembly is configured to enable oxygen in the air flow in the space around the air-conditioning membrane assembly to penetrate through the air-conditioning membrane to enter the oxygen-enriched gas collection cavity more than nitrogen in the air flow in the space around the air-conditioning membrane assembly; and the air extracting device is provided with an air extracting pump and is configured to extract the air penetrating into the oxygen-enriched air collecting cavity to the outside of the storage container, and the air flowing out of the oxygen-enriched air collecting cavity is subjected to heat exchange by the pump shell of the air extracting pump. The refrigerating and freezing device has good fresh-keeping effect, low noise and low cost, and can fully utilize the cold energy in the gas flowing out of the oxygen-enriched gas collecting cavity to cool the air pump, thereby ensuring the running stability of the air pump and the whole refrigerating and freezing device.
Description
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. There is only one type of vacuum preservation in the market at present for better food storage. The frequently adopted vacuum preservation modes are vacuum bag preservation and vacuum storage compartment preservation.
The vacuum bag is adopted for preserving, so that consumers need to vacuumize every time food is stored, the operation is troublesome, and the consumers cannot enjoy the food.
The vacuum storage compartment is adopted for fresh keeping, and the box body and the like are of rigid structures, so that the vacuum state is required to be maintained, the requirement on the vacuumizing system is high, the sealing performance of the refrigerator is high, and the amount of new air which is introduced is large when one article is taken and placed, so that the energy consumption is high. In addition, in a vacuum environment, the food is difficult to receive cold, and is particularly unfavorable for food storage. In addition, because of the vacuum environment, the user needs great effort to open the refrigerator door and the like each time, causing inconvenience to the user. Although some refrigerators may be ventilated into the vacuum storage compartment through a vacuum system, this may cause users to wait for a long time, with poor timeliness. The vacuum time is longer, and the deformation of the refrigerator body and the like is serious, namely the existing refrigerator with a vacuumizing structure cannot well finish vacuum preservation, the strength of the refrigerator body and the like is high, the realization requirement is high, and the cost is high.
Furthermore, the inventors found that: because of the large volume and high cost of nitrogen production equipment traditionally used for controlled atmosphere, the technology is basically limited to various large professional storage (the storage capacity is generally at least 30 tons). It can be said that the adoption of proper gas regulating technology and corresponding devices can economically miniaturize and mute the gas regulating system, so that the gas regulating system is suitable for household or individual users, and is a technical problem which is always desired to be solved by the technicians in the field of gas regulating preservation but is not successfully solved all the time.
Disclosure of Invention
The invention aims to overcome at least one defect of the existing refrigerator, and provides a refrigeration and freezing device which creatively provides that oxygen in air in an air-conditioned fresh-keeping space is discharged out of the space, so that a nitrogen-rich and oxygen-poor gas atmosphere which is beneficial to food fresh-keeping is obtained in the space, the gas atmosphere reduces the oxygen content in the fruit and vegetable storage space, reduces the strength of aerobic respiration of fruits and vegetables, ensures the basic respiration effect, prevents the fruits and vegetables from carrying out anaerobic respiration, and further achieves the aim of long-term fresh-keeping of the fruits and vegetables.
A further object of the present invention is to make full use of the cold in the gas flowing out of the oxygen-enriched gas collection chamber to cool the pump itself and to ensure the operational stability of the pump itself and of the whole refrigeration and freezer.
In order to achieve at least one of the above objects, the present invention provides a refrigerating and freezing apparatus comprising:
the box body is internally limited with a storage space, a storage container is arranged in the storage space, and an air-conditioning fresh-keeping space is arranged in the storage container;
the air-conditioning membrane assembly is provided with at least one air-conditioning membrane and an oxygen-enriched gas collecting cavity, the surrounding space of the air-conditioning membrane assembly is communicated with the air-conditioning fresh-keeping space, and the air-conditioning membrane assembly is configured to enable oxygen in the air flow of the surrounding space of the air-conditioning membrane assembly to penetrate through the air-conditioning membrane to enter the oxygen-enriched gas collecting cavity more than nitrogen in the air flow of the surrounding space of the air-conditioning membrane assembly; and
the air extracting device is provided with an air extracting pump and is configured to pump the air penetrating into the oxygen-enriched air collecting cavity out of the storage container, and the air flowing out of the oxygen-enriched air collecting cavity firstly exchanges heat with the pump shell of the air extracting pump and then enters the air extracting pump, or the air flowing out of the oxygen-enriched air collecting cavity firstly enters the air extracting pump and flows out of the air extracting pump and then exchanges heat with the pump shell of the air extracting pump.
Optionally, the air extracting device further comprises a sealing box for accommodating the air extracting pump; and is also provided with
The air extraction opening of the air extraction pump is communicated to the air outlet of the oxygen-enriched gas collection cavity through an air extraction pipeline, and the air outlet of the air extraction pump is communicated with the inner space of the sealing box;
the sealing box is provided with a gas exhaust pipeline communicated with the inner space of the sealing box.
Optionally, the box body is provided with an inner container, a shell arranged at the outer side of the inner container and a heat preservation layer positioned between the inner container and the shell; the storage space is limited in the liner; and the air exhaust device is arranged in the heat insulation layer between the inner container and the shell.
Optionally, the shell comprises a back plate, and the air pump is arranged between the back wall of the liner and the back plate and is positioned behind the storage container.
Optionally, the storage container is a drawer assembly comprising:
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 withdrawal and inward insertion of the drawer cylinder from the forward opening of the drawer cylinder.
Optionally, a containing cavity communicated with the air-conditioning fresh-keeping space is arranged in the top wall of the drawer cylinder body so as to contain the air-conditioning membrane component.
Optionally, at least one first vent hole and at least one second vent hole which is spaced from the at least one first vent hole are formed in a wall surface between the accommodating cavity of the top wall of the drawer cylinder and the air-conditioning fresh-keeping space, so that the accommodating cavity and the air-conditioning fresh-keeping space are respectively communicated at different positions; the refrigerating and freezing device further comprises a fan which is arranged in the accommodating cavity so as to enable the gas in the air-conditioning fresh-keeping space to return to the air-conditioning fresh-keeping space through at least one first vent hole, the accommodating cavity and at least one second vent hole in sequence.
Optionally, the fan is a centrifugal fan, and is arranged above the at least one first vent hole, so that the rotation axis of the centrifugal fan is vertically downward, and the air inlet faces the at least one first vent hole; the air-conditioning membrane assembly is arranged above the at least one second ventilation hole, and each oxygen-enriched membrane of the air-conditioning membrane assembly is parallel to the top wall.
Optionally, the centrifugal fan is arranged at the front part of the accommodating cavity; the air-conditioning membrane component is arranged behind the centrifugal fan.
Optionally, the air-conditioning membrane assembly further includes a support frame having a first surface and a second surface parallel to each other, and the support frame is formed with a plurality of air flow channels extending over the first surface and the second surface, respectively, and penetrating the support frame to communicate the first surface and the second surface, the plurality of air flow channels together forming an oxygen-enriched gas collection chamber; the at least one air-conditioning film is two plane-shaped air-conditioning films which are respectively paved on the first surface and the second surface of the supporting frame.
The refrigerating and freezing device provided by the invention has the advantages that the air-conditioning film component and the air pump are arranged, so that the air atmosphere rich in nitrogen and poor in oxygen can be formed in the air-conditioning fresh-keeping space to be beneficial to food fresh-keeping, the air atmosphere reduces the strength of the aerobic respiration of fruits and vegetables by reducing the content of oxygen in the fruit and vegetable storage space, and meanwhile, the basic respiration effect is ensured, and the fruits and vegetables are prevented from carrying out anaerobic respiration, so that the aim of long-term fresh-keeping of the fruits and vegetables is achieved.
Further, the refrigerating and freezing device can fully utilize the cold energy in the gas flowing out of the oxygen-enriched gas collecting cavity to cool the air pump, so that the running stability of the air pump and the whole refrigerating and freezing device is ensured, and the energy efficiency of the refrigerating and freezing device is improved.
Furthermore, as the air pump in the refrigerating and freezing device is arranged in the heat insulation layer between the inner container and the shell, the noise of the air pump in operation can be obviously reduced, and better mute experience is provided for users. Especially, the aspiration pump is positioned at the rear of the storage container, the air-conditioning membrane component is positioned at the rear of the accommodating cavity, the length of the pipeline can be shortened, and the loss of vacuum degree of air conditioning can be reduced.
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. Moreover, the refrigeration and freezing device well solves the technical problems which are required to be solved by the person skilled in the air-conditioning fresh-keeping field but are not successfully solved all the time. The refrigerating and freezing device of the invention has small volume and low noise, and is especially suitable for families and individuals.
Further, the refrigerating and freezing device of the present invention is preferably a refrigerator, such as a home compression type direct cooling refrigerator, a home compression type air cooling refrigerator, and of course, may be a semiconductor refrigerating refrigerator.
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 partial block diagram of a refrigeration and freezer according to one embodiment of the invention;
FIG. 2 is a schematic partial block diagram of another view of the structure shown in FIG. 1;
FIG. 3 is a schematic exploded view of an air extractor in a refrigeration chiller according to one embodiment of the present invention;
FIG. 4 is a schematic partial block diagram of a refrigeration and freezer according to one embodiment of the invention;
FIG. 5 is a schematic exploded view of the structure shown in FIG. 4;
fig. 6 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 partial block diagram of a refrigeration and freezer according to one embodiment of the invention; fig. 2 is a schematic partial block diagram of another view of the structure shown in fig. 1. As shown in fig. 1 and 2, an embodiment of the present invention provides a refrigerating and freezing apparatus, which may include a cabinet 20, a main door, an air conditioning membrane assembly 30, an air extracting device 40, and a refrigerating system.
The case 20 may include a liner 21, a housing 27 disposed outside the liner 21, and a thermal insulation layer between the liner 21 and the housing 27. The inner container 21 defines a storage space 211 therein. The main door body may be composed of two opposite-opening door bodies, which are rotatably installed in the case 20, and configured to open or close the storage space 211 defined by the case 20. The main door body can also be a door body. Further, a storage container is disposed in the storage space 211, and an air-conditioned fresh-keeping space is disposed in the storage container. The air-conditioned fresh-keeping space can be a closed space or an approximately closed space. Preferably, the storage container is a drawer assembly. The storage container 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 211, and in particular, may be disposed at a lower portion of the storage space 211. 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 211. 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 matched with the opening of the drawer cylinder 22 to perform the sealing of the controlled atmosphere fresh-keeping space. In some alternative embodiments, the storage container may include a barrel and a small door configured to open or close the barrel.
The refrigeration system is configured to provide refrigeration to the storage space 21. Specifically, in some embodiments, the refrigeration system may be a refrigeration cycle system composed of a compressor, a condenser, a throttle device, an evaporator, and the like. The evaporator is configured to provide cooling directly or indirectly into the storage space 211. For example, when the refrigerating and freezing apparatus is a home compression type direct-cooling refrigerator, the evaporator may be provided outside or inside the rear wall surface of the liner 21. When the refrigerating and freezing device is a household compressed air-cooled refrigerator, the interior of the box body 20 is also provided with an evaporator chamber, the evaporator chamber is communicated with the storage space 211 through an air path system, an evaporator is arranged in the evaporator chamber, and a fan is arranged at an outlet of the evaporator chamber so as to circularly refrigerate the storage space 211. In other embodiments, the refrigeration system may also be a semiconductor refrigeration device.
The air conditioning membrane assembly 30 is provided with at least one air conditioning membrane 31 and an oxygen-enriched gas collecting cavity, and the surrounding space is communicated with the air conditioning fresh-keeping space. The modified atmosphere membrane assembly 30 may be configured such that oxygen in the spatial gas stream surrounding the modified atmosphere membrane assembly 30 permeates through the modified atmosphere membrane 31 more into the oxygen-enriched gas collection chamber than nitrogen in the spatial gas stream surrounding the modified atmosphere membrane assembly 30. Specifically, the inner side surface of each of the modified atmosphere membranes 31 faces the oxygen-enriched gas collection chamber so that oxygen in the air in the outer space of the modified atmosphere membrane module 30 passes through at least one modified atmosphere membrane 31 more than nitrogen therein into the oxygen-enriched gas collection chamber when the pressure in the oxygen-enriched gas collection chamber is smaller than the pressure in the surrounding space of the modified atmosphere membrane module 30.
The gas extraction device 40 may have a gas extraction pump 41 and be configured to extract the gas penetrating into the oxygen-enriched gas collection chamber out of the storage container.
In this embodiment, the air extracting device 40 may be used to extract air outwards, so that the pressure of the oxygen-enriched gas collecting cavity may be smaller than the pressure of the surrounding space of the air-conditioning membrane assembly 30, and further, the oxygen in the surrounding space of the air-conditioning membrane assembly 30 may enter the oxygen-enriched gas collecting cavity. Because the air-conditioning fresh-keeping space is communicated with the space around the air-conditioning membrane assembly 30, air in the air-conditioning fresh-keeping space can enter the space around the air-conditioning membrane assembly 30, so that oxygen in the air-conditioning fresh-keeping space can enter the oxygen-enriched gas collection cavity, and a nitrogen-enriched and oxygen-depleted gas atmosphere beneficial to food fresh keeping is obtained in the air-conditioning fresh-keeping space.
The refrigerating and freezing device can form a nitrogen-enriched and oxygen-depleted gas atmosphere in the modified atmosphere fresh-keeping space to be beneficial to food fresh-keeping, and the gas atmosphere reduces the strength of aerobic respiration of fruits and vegetables by reducing the content of oxygen in the fruit and vegetable storage space, ensures the basic respiration function and prevents the fruits and vegetables from carrying out anaerobic respiration, thereby achieving the aim of long-term fresh-keeping of the fruits and vegetables. In addition, the atmosphere also has a large amount of gases such as nitrogen, so that the cooling efficiency of the articles in the air-conditioned fresh-keeping space is not reduced, and fruits and vegetables and the like can be effectively stored. And the requirements on rigidity and strength of the storage container and the like are low, and the implementation requirements are low, so that the cost is low. The refrigeration and freezing device well solves the technical problems which are required to be solved by the technicians in the field of air-conditioned preservation all the time but are not successfully solved all the time. The refrigerating and freezing device of the invention has small volume and low noise, and is especially suitable for families and individuals.
Particularly, in this embodiment, the storage temperature of the air-conditioned fresh-keeping space in the refrigerating and freezing device is generally between-24 ℃ and 10 ℃, and the air permeated into the oxygen-enriched air collecting cavity can have a certain amount of cold, and if the air is directly discharged to the external high-temperature environment, the condensation phenomenon can be generated, and the loss of cold can also be caused. Therefore, the air extracting device 40 in this embodiment of the present invention is further configured such that the air flowing out of the oxygen-enriched air collecting cavity enters the air extracting pump 41 after exchanging heat with the pump shell of the air extracting pump 41; or the gas flowing out of the oxygen-enriched gas collecting cavity firstly enters the air pump 41 and flows out of the air pump 41, and then exchanges heat with the pump shell of the air pump 41, so that the cold energy in the gas flowing out of the oxygen-enriched gas collecting cavity is fully utilized. The air pumping device 40 pumps air to cool the air pump 41, so that the vacuum pressure and air quantity of the air pump can be prevented from being reduced due to the fact that the air pump 41 heats too high, the working efficiency and the fresh-keeping performance of the air-conditioning membrane assembly are directly affected, and the motor of the air pump 41 can be prevented from being burnt out to cause quality accidents when serious conditions exist. The air extracted by the air extracting device 40 can be used for cooling the air extracting pump 41, so that the working temperature of the air extracting pump 41 can be obviously reduced, and the stability of the air extracting pump 41 is improved.
For example, as shown in fig. 3, the air extraction device 40 may further include a sealing box 42, and the air extraction pump 41 may be disposed in the sealing box 42. The pumping port of the pumping pump 41 is connected to the exhaust port of the oxygen-enriched gas collection chamber via a pumping line 51. The exhaust port 411 of the air pump 41 is in communication with the inner space of the seal box 42, specifically, the exhaust port 411 of the air pump 41 may be exposed in the seal box 42 without connecting a pipe. The seal case 42 is provided with a gas discharge line 52 communicating with the inner space of the seal case 42. In alternative embodiments of the invention, the suction line 51 may be wrapped around the casing of the suction pump 41. In other alternative embodiments of the invention, the exhaust port of the pump 41 may be provided with an exhaust pipe that blows toward its pump housing.
In some embodiments of the present invention, the air evacuation device 40 is preferably disposed in the insulation between the liner 21 and the housing 27. The air pump 41 is arranged in the heat insulation layer, so that noise generated when the air pump 41 operates can be remarkably reduced, and better mute experience is provided for a user. Further, the housing 27 may include a back plate, and the air extractor 40 is disposed between the back wall of the liner 21 and the back plate of the housing 27 and behind the storage container, so as to shorten the length of the air extraction pipeline 51 between the air pump 41 and the air conditioning membrane assembly 30, and reduce the loss of the vacuum degree of the air conditioning.
The seal case 42 can also reduce noise generated when the suction pump 41 is operated. To further reduce noise, a plurality of damper blocks may be provided between the suction pump 41 and the seal case 42. A plurality of shock-absorbing blocks may also be provided on the outside of the seal box 42 to fit within the insulation.
In some embodiments of the present invention, the drawer cylinder 22 may be provided with a plurality of micropores, and the storage space 211 and the modified atmosphere fresh-keeping space are communicated through the plurality of micropores. The micro-holes may also be referred to as air pressure balance holes, each of which may be of the order of millimeters, for example, each having a diameter of 0.1mm to 3mm, preferably 1mm, 1.5mm, etc. The pressure in the modified atmosphere fresh-keeping space can be prevented from being too low by arranging the plurality of micropores, the nitrogen in the modified atmosphere fresh-keeping space can not flow to the large storage space 211 by arranging the plurality of micropores, and even if the nitrogen flows, the nitrogen is very small or even negligible, so that the preservation of foods in the modified atmosphere fresh-keeping space can not be influenced. In some alternative embodiments of the present invention, the drawer cylinder 22 may not have micropores, and even if a large amount of nitrogen or other gas exists in the air-conditioned fresh-keeping space, the user does not need to use much effort when pulling the drawer body 23, and the air-conditioned fresh-keeping space is greatly labor-saving compared with the existing vacuum storage chamber.
In some embodiments of the present invention, the liner 21 may be a refrigeration liner, and the storage space 211 is a refrigeration space, and the storage temperature is typically between 2 ℃ and 10 ℃, preferably between 3 ℃ and 8 ℃. Further, the case 20 may further define a freezing space 25 and a temperature changing space 26, i.e., the case 20 may further include a freezing chamber liner. The refrigerating space 25 is disposed below the storage space 211, and the temperature changing space 26 is disposed between the refrigerating space and the refrigerating space. The temperature in the refrigerated space is generally in the range of-14 to-22 ℃. The temperature changing space can be adjusted according to the requirement so as to store proper food. In some alternative embodiments of the present invention, the storage space 211 may also be a freezing space or a temperature-changing space, that is, the temperature range of the storage space 211 may be controlled between-14 ℃ and-22 ℃ or adjusted according to the requirement. Further, the relative positions of the refrigerating space, the freezing space and the temperature changing space can be adjusted according to actual requirements.
In some embodiments of the present invention, as shown in fig. 4 and 5, an air conditioning membrane assembly 30 may be disposed on the barrel wall of the drawer barrel 22. The air conditioning membrane assembly 30 may be flat and may preferably be disposed horizontally on the top wall of the drawer cylinder 22. Specifically, a receiving chamber 221 is provided in the top wall of the drawer cylinder 22 to receive the air conditioning membrane assembly 30. For example, at least one first vent hole 222 and at least one second vent hole 223 are formed in a wall surface between the accommodating chamber of the top wall of the drawer cylinder 22 and the controlled atmosphere fresh-keeping space. The at least one first vent hole 222 is spaced apart from the at least one second vent hole 223 to communicate the accommodating chamber with the modified atmosphere fresh-keeping space at different positions, respectively. The first vent hole 222 and the second vent hole 223 are small holes, and the number of the first vent hole and the second vent hole may be plural. In some alternative embodiments, the drawer cylinder 22 has a recessed slot inside the top wall. The air-conditioning membrane assembly 30 is disposed in a recessed channel in the top wall of the drawer cylinder 22.
In some embodiments of the present invention, in order to facilitate the flow of the air in the modified atmosphere fresh food space and the accommodating chamber 221, the refrigerating and freezing apparatus may further include a blower 60, and the blower 60 may be disposed in the accommodating chamber and configured to facilitate the flow of the air in the modified atmosphere fresh food space into the accommodating chamber 221 through the first ventilation hole 222 and the flow of the air in the accommodating chamber 221 into the modified atmosphere fresh food space through the second ventilation hole 223. That is, the blower 60 may promote the return of the gas of the conditioned space to the conditioned space via the at least one first vent 222, the receiving chamber, and the at least one second vent 223 in sequence.
The fan 60 is preferably a centrifugal fan and is disposed in the receiving cavity 221 at a first vent 222. That is, the centrifugal fan is located above the at least one first vent hole 222 with the rotation axis vertically downward, and the air intake is opposite to the first vent hole 222. The air outlet of the centrifugal fan may be directed toward the air conditioning membrane assembly 30. The air conditioning membrane assembly 30 is disposed above the at least one second vent hole 223 such that each air conditioning membrane of the air conditioning membrane assembly 30 is parallel to the top wall of the drawer cylinder 22. At least one first vent 222 is provided in the front of the top wall and at least one second vent 223 is provided in the rear of the top wall. That is, the centrifugal fan is disposed at the front of the accommodating chamber 221, the air-conditioning membrane module 30 is disposed at the rear of the accommodating chamber 221, and the air-conditioning membrane module 30 is disposed at the rear of the centrifugal fan. Further, the top wall of the drawer cylinder 22 includes a main plate portion 224 and a cover plate portion 225, a recess portion is formed in a partial region of the main plate portion 224, and the cover plate portion 225 is detachably covered on the recess portion to form the accommodating chamber 221. To facilitate the manufacture of the drawer cylinder 22, the main plate 224 may be integrally formed with the side, bottom, and rear walls of the drawer cylinder 22.
In some embodiments of the present invention, as shown in fig. 6, the air conditioning membrane assembly 30 may be in the form of a flat plate, and the air conditioning membrane assembly 30 may further include a support frame 32. The air-conditioning membranes 31 are preferably oxygen-enriched membranes, and can be two, and are arranged on two sides of the supporting frame 32, so that the two air-conditioning membranes 31 and the supporting frame 32 jointly enclose an oxygen-enriched gas collecting cavity. Further, the support frame 32 may include a frame, ribs and/or plates disposed within the frame, and the ribs, ribs and plates may form air flow channels therebetween, grooves may be formed on the surface of the ribs, and grooves may be formed on the surface of the plates to form air flow channels. The ribs and/or plates may increase the structural strength of the air conditioning membrane assembly 30, etc. That is, the support frame 32 has a first surface and a second surface parallel to each other, and the support frame 32 is formed with a plurality of gas flow passages extending over the first surface and the second surface, respectively, and extending through the support frame 32 to communicate the first surface and the second surface, the plurality of gas flow passages together forming an oxygen-enriched gas collection chamber; at least one air regulating membrane 31 is two planar air regulating membranes, which are respectively laid on the first surface and the second surface of the support frame 32.
In some embodiments of the present invention, the support frame 32 includes 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 suction pump 41. The air vent 33 may be disposed on a long edge of the frame or on a short edge of the frame, so as to be determined according to the disposed orientation or actual design requirements of the air regulating membrane assembly 30, for example, in the embodiment shown in fig. 4 and 5, the air vent 33 may be disposed on a long edge of the frame. The air-conditioning film 31 is firstly mounted on the frame through a double-sided adhesive tape 34, and then is sealed through a sealant 35.
In some embodiments, the support frame 32 may include: the frame, a plurality of first floor and a plurality of second floor. The first rib plates are arranged at intervals in the longitudinal direction and extend in the transverse direction in the frame, and one side surface of the first rib plates forms a first surface. The plurality of second rib plates are arranged at intervals along the transverse direction on the other side surface of the plurality of first rib plates and extend along the longitudinal direction, and the second surface is formed on the side surface of the plurality of second rib plates, which is far away from the first rib plates. The support frame 32 of the present invention ensures continuity of the air flow passage on the one hand, greatly reduces the volume of the support frame 32 on the other hand, and greatly enhances the strength of the support frame 32 by providing a plurality of first ribs spaced apart in the longitudinal direction and extending in the transverse direction and a plurality of second ribs extending in the longitudinal direction on one side surface of the aforementioned plurality of first ribs inside the frame thereof. In addition, the above structure of the support frame 32 ensures that the air-conditioning membrane 31 can be supported sufficiently, and can always maintain good flatness even under the condition that the negative pressure in the oxygen-enriched gas collection cavity is large, thereby ensuring the service life of the air-conditioning membrane assembly 30.
In a further embodiment, the plurality of first ribs may include: a plurality of first narrow ribs and a plurality of first wide ribs. The first wide rib plates are arranged at intervals, and the first narrow rib plates are arranged between two adjacent first wide rib plates. The aforementioned plurality of second ribs may include: the first narrow rib plates and the second wide rib plates are arranged at intervals, and the second narrow rib plates are arranged between two adjacent second wide rib plates. Those skilled in the art will readily appreciate that "wide" and "narrow" herein are relative terms.
In some embodiments, each of the first wide ribs is recessed inwardly from a side surface thereof forming the first surface to form a first groove; each of the second wide ribs is recessed inwardly from its side surface forming the second surface to form a second channel, thereby improving connectivity of its internal lattice structure while ensuring a small thickness (or volume) of the support frame 32.
In a further embodiment, a portion of the surface of each of the first wide ribs facing away from the first surface extends toward the second rib to be flush with the second surface, and is recessed inwardly from the portion of the surface flush with the second surface to form a third groove; the third grooves communicate with the portions where the second grooves intersect to form cross grooves. A part of the surface of at least one second wide rib plate facing away from the second surface extends towards the first rib plate to be level with the first surface, and a fourth groove is formed by inwards sinking the part of the surface level with the first surface; wherein the fourth groove communicates with a portion where the first groove intersects to form a cross groove.
In some embodiments of the present invention, to facilitate the flow of the air stream, the inner surface of the cover plate portion 225 may extend downwardly with a plurality of air guiding ribs to guide the air stream from the fan 60 to flow within the receiving chamber over the outer surface of each air regulating membrane 31 of the air regulating membrane assembly 30 facing away from the oxygen enriched gas collection chamber. The plurality of air guide rib plates can be divided into two groups, including a first group of air guide rib plates and a second group of air guide rib plates which are symmetrically arranged about a plane. Each set of air guide ribs includes a first air guide rib, at least one second air guide rib, and at least one third air guide rib. The first air guide rib extends from the air outlet of the centrifugal fan to one side of the accommodating chamber and extends to one lateral outer side of the air conditioning membrane assembly 30. Each second air guide rib is disposed between two first air guide ribs and between the air conditioning membrane assembly 30 and the centrifugal fan. Each third air guide rib is located at one lateral outer side of the air regulating membrane module 30 to guide the air flow such that the air flow enters the gap between the air regulating membrane module 30 and the bottom surface or the top surface of the accommodating chamber from both lateral sides of the air regulating membrane module 30.
In some embodiments of the present invention, a locking device, a handle, and a handle positioning device are 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 and the buckling parts are kept in the engaged state, 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, 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, the user first closes the drawer body 23 and then returns the handle down or up 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 (9)
1. A refrigeration and freezer comprising:
the box body is internally provided with a storage space, a storage container is arranged in the storage space, and an air-conditioning fresh-keeping space is arranged in the storage container;
the air-conditioning membrane assembly is provided with at least one air-conditioning membrane and an oxygen-enriched gas collection cavity, the surrounding space of the air-conditioning membrane assembly is communicated with the air-conditioning fresh-keeping space, and the air-conditioning membrane assembly is configured to enable oxygen in the air flow of the surrounding space of the air-conditioning membrane assembly to penetrate through the air-conditioning membrane to enter the oxygen-enriched gas collection cavity more than nitrogen in the air flow of the surrounding space of the air-conditioning membrane assembly; and
the air extracting device is provided with an air extracting pump and is configured to pump the air penetrating into the oxygen-enriched air collecting cavity out of the storage container, and the air flowing out of the oxygen-enriched air collecting cavity firstly exchanges heat with the pump shell of the air extracting pump and then enters the air extracting pump, or the air flowing out of the oxygen-enriched air collecting cavity firstly enters the air extracting pump and flows out of the air extracting pump and then exchanges heat with the pump shell of the air extracting pump;
the air extracting device also comprises a sealing box for accommodating the air extracting pump; and is also provided with
The air extraction opening of the air extraction pump is communicated to the air outlet of the oxygen-enriched gas collection cavity through an air extraction pipeline, and the air outlet of the air extraction pump is communicated with the inner space of the sealing box;
the sealing box is provided with a gas exhaust pipeline communicated with the inner space of the sealing box;
the air exhaust pipeline is wound on the pump shell of the air exhaust pump, or an exhaust port of the air exhaust pump is provided with an exhaust pipe blowing to the pump shell.
2. A refrigerating and freezing apparatus according to claim 1, wherein,
the box body is provided with an inner container, a shell arranged at the outer side of the inner container and a heat preservation layer positioned between the inner container and the shell; the storage space is defined in the liner; and is also provided with
The air exhaust device is arranged in the heat preservation layer between the inner container and the shell.
3. A refrigerating and freezing apparatus according to claim 2, wherein,
the shell comprises a back plate, and the air pump is arranged between the back wall of the inner container and the back plate and is positioned behind the storage container.
4. A refrigerating and freezing apparatus according to claim 1, wherein,
the storage container is a drawer assembly comprising:
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.
5. A refrigerating and freezing apparatus as recited in claim 4, wherein,
and an accommodating cavity communicated with the air-conditioning fresh-keeping space is arranged in the top wall of the drawer cylinder body so as to accommodate the air-conditioning membrane component.
6. A refrigerating and freezing apparatus according to claim 5, wherein,
at least one first vent hole and at least one second vent hole which is spaced from the at least one first vent hole are formed in the wall surface between the accommodating cavity and the modified atmosphere fresh-keeping space of the top wall of the drawer cylinder body so as to be communicated with the accommodating cavity and the modified atmosphere fresh-keeping space at different positions respectively;
the refrigerating and freezing device further comprises a fan which is arranged in the accommodating cavity to enable the air in the air-conditioned fresh-keeping space to return to the air-conditioned fresh-keeping space sequentially through the at least one first vent hole, the accommodating cavity and the at least one second vent hole.
7. A refrigerating and freezing apparatus as recited in claim 6, wherein,
the fan is a centrifugal fan and is arranged above the at least one first vent hole, so that the rotation axis of the centrifugal fan is vertically downward, and the air inlet faces the at least one first vent hole;
the air-conditioning membrane assembly is arranged above the at least one second ventilation hole and enables each oxygen-enriched membrane of the air-conditioning membrane assembly to be parallel to the top wall.
8. A refrigerating and freezing apparatus as recited in claim 7, wherein,
the centrifugal fan is arranged at the front part of the accommodating cavity; the air-conditioning membrane assembly is arranged behind the centrifugal fan.
9. A refrigerating and freezing apparatus according to claim 1, wherein,
the air-conditioning membrane assembly further comprises a support frame, wherein the support frame is provided with a first surface and a second surface which are parallel to each other, a plurality of air flow channels which extend on the first surface and the second surface respectively and penetrate through the support frame to communicate the first surface and the second surface are formed on the support frame, and the plurality of air flow channels jointly form the oxygen-enriched gas collecting cavity;
the at least one air-conditioning film is two plane-shaped air-conditioning films which are respectively paved on the first surface and the second surface of the supporting frame.
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| CN201611132102.4A CN106839586B (en) | 2016-12-09 | 2016-12-09 | Refrigerating and freezing device |
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| CN201611132102.4A CN106839586B (en) | 2016-12-09 | 2016-12-09 | Refrigerating and freezing device |
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| CN106839586B true CN106839586B (en) | 2023-07-21 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106628640B (en) | 2016-12-02 | 2019-01-18 | 青岛海尔股份有限公司 | Controlled atmosphere article-storage device |
| CN107270624A (en) * | 2017-06-30 | 2017-10-20 | 青岛海尔股份有限公司 | Refrigerating device |
| CN108302862A (en) * | 2017-12-29 | 2018-07-20 | 青岛海尔股份有限公司 | Refrigerating device |
| CN108759244A (en) * | 2018-06-19 | 2018-11-06 | 青岛海尔股份有限公司 | Refrigerator with control oxygen fresh-keeping function |
| CN117663609A (en) * | 2022-08-31 | 2024-03-08 | 青岛海尔电冰箱有限公司 | Refrigerating and freezing device |
| CN117663611A (en) * | 2022-09-01 | 2024-03-08 | 青岛海尔电冰箱有限公司 | Refrigerating and freezing device |
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| JP2005016875A (en) * | 2003-06-27 | 2005-01-20 | Matsushita Electric Ind Co Ltd | Preservation box |
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