CN206362063U - Refrigerating device - Google Patents

Abstract

The utility model provides a refrigeration and freezing device. The refrigerating and freezing device includes: a box body, in which a storage container with a controlled atmosphere fresh-keeping space is arranged; a gas separator, the gas separator has a modified atmosphere membrane, a first gas collection chamber and a second gas collection chamber, and the atmosphere adjustment membrane is located in the second gas collection chamber. Between the first gas collection chamber and the second gas collection chamber, the remaining gas after removing the gas that has passed through the modified atmosphere film and entered the second gas collection chamber from the air entering the first gas collection chamber enters the modified atmosphere fresh-keeping space; Air suction pump, the air suction pump is arranged on the top of the box, communicated with the second gas collection chamber through pipelines, so as to exhaust the gas penetrating into the second gas collection chamber to the outside of the gas separator. The refrigerating and freezing device of the utility model not only has good fresh-keeping effect, low noise and low cost, but also can fully fill the top space of the box body.

Description

Freezer

technical field

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

Background technique

A refrigerator is a refrigeration device that maintains a constant low temperature, and it is also a civilian product that keeps food or other items in a constant low temperature and cold state. With the improvement of the quality of life, consumers have higher and higher requirements for the preservation of stored food, especially for the color and taste of food. Therefore, the stored food should also ensure that the color, taste, and freshness of the food remain unchanged as much as possible during the storage period. At present, in order to better store food in the market, there is only one kind of vacuum preservation. Vacuum fresh-keeping methods that are often used are vacuum bag fresh-keeping and vacuum storage compartment fresh-keeping.

Using vacuum bags to keep fresh, consumers need to vacuumize every time they store food, which is cumbersome to operate and not popular with consumers.

The vacuum storage room is used to keep fresh. Since the box body is a rigid structure, it must be kept in a vacuum state. The requirements for the vacuum system and the sealing performance of the refrigerator are very high. There is a lot of air, and the consumption of energy is relatively large. Moreover, in a vacuum environment, it is difficult for food to absorb cold, which is especially unfavorable for food storage. In addition, due to the vacuum environment, it takes a lot of effort for the user to open the door of the refrigerator each time, which causes inconvenience to the user. Although some refrigerators can ventilate the vacuum storage room through the vacuum system, this will cause the user to wait for a long time, and the timeliness is poor. A longer vacuum time will also cause serious deformation of the refrigerator box, that is, the existing refrigerators with a vacuum pumping structure cannot complete vacuum preservation well, and the strength of the box is required to be very high, and the implementation requirements are high and the cost is high. .

In addition, the inventors found that: due to the large volume and high cost of nitrogen-making equipment traditionally used for controlled atmosphere preservation, this technology is basically still limited to use in various large-scale professional storage warehouses (storage capacity is generally at least 30 tons or more) ). It can be said that what kind of appropriate gas adjustment technology and corresponding devices can be used to economically miniaturize and silence the air conditioning system, making it suitable for families or individual users, is a problem that technicians in the field of air conditioning and fresh-keeping have been eager to solve but have never been able to solve. Technical problems that can be successfully resolved.

Utility model content

One object of the present utility model is to overcome at least one defect of the existing refrigerator, and to provide a refrigeration and freezing device, which creatively realizes the separation of oxygen in the air through a gas separator, and then fills the remaining nitrogen-enriched gas into To the controlled atmosphere preservation space, so as to obtain a nitrogen-rich and oxygen-poor gas atmosphere in the controlled atmosphere preservation space to facilitate food preservation. The gas atmosphere reduces the oxygen content in the fruit and vegetable preservation space, reduces the intensity of aerobic respiration of fruits and vegetables, and ensures the basic The respiration of fruits and vegetables prevents anaerobic respiration of fruits and vegetables, so as to achieve the purpose of long-term freshness of fruits and vegetables.

A further object of the present invention is to make full use of the head space and storage space of the refrigerating and freezing device, so that the refrigerating and freezing device has a compact structure and high energy efficiency.

In particular, the utility model provides a refrigeration and freezing device, which includes:

A box body, a storage space is defined in the box body, a storage container is arranged in the storage space, and a controlled atmosphere fresh-keeping space is provided in the storage container;

A gas separator, the gas separator has an atmosphere-modulating membrane, a first gas collection chamber and a second gas collection chamber, the atmosphere-modulating membrane is located between the first gas-collecting chamber and the second gas-collecting chamber; the atmosphere-modulating membrane is configured such that the first Oxygen in the air in the gas collection chamber enters the second gas collection chamber through the atmosphere-modulating membrane more than the nitrogen in it; the first gas collection chamber communicates with the external space of the gas separator in a controlled manner, so that the gas separator The air in the external space enters the first gas collection chamber, and the first gas collection chamber is also communicated with the controlled atmosphere fresh-keeping space, so that the air that enters the first gas collection chamber is removed from the air that has passed through the air-modulated membrane and enters the first gas collection chamber. The rest of the gas after the gas in the second gas collection chamber enters the modified atmosphere fresh-keeping space; and

Air suction pump, the air suction pump is arranged on the top of the box, communicated with the second gas collection chamber through pipelines, so as to exhaust the gas penetrating into the second gas collection chamber to the outside of the gas separator.

Optionally, the refrigerating and freezing device further includes an axial flow fan, which is arranged on the flow path from the first gas collection chamber to the controlled atmosphere fresh-keeping space, and is configured to be activated in a controlled manner, so as to encourage the rest of the gas to flow into the controlled-atmosphere fresh-keeping space.

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

the drawer cylinder has a front opening and is arranged in the storage space; and

The drawer body is slidably arranged in the drawer cylinder, so as to be operable to be drawn out from the front opening of the drawer cylinder and inserted inward into the drawer cylinder.

Optionally, an accommodating space is defined at the rear of the top of the box to accommodate the air pump.

Optionally, the refrigerating and freezing device further includes a refrigeration system configured to provide cold energy to the storage space, and the refrigeration system has a compressor installed in the storage space.

Optionally, the refrigerated freezer also includes:

install the top plate, and install it on the top surface of the accommodation space through a plurality of shock-absorbing foot pads; and

a sealed box mounted on the mounting top plate; and

The suction pump is installed in the sealed box.

Optionally, cooling holes are provided at both lateral ends of the top wall and rear wall of the accommodation space; the air pump is arranged at one lateral end of the accommodation space.

Optionally, the upper edge of the front wall of the accommodating space is in front of the lower edge; and the storage space includes a first space in front of the front wall of the accommodating space, and a first space below the bottom wall of the accommodating space. second space.

Optionally, the gas separator is arranged inside the storage space and on the rear side of the drawer cylinder.

Optionally, the gas separator further includes a gas collection box, in which a horizontally placed support frame is arranged, and the support frame and the upper half box body of the gas collection box jointly define the first gas collection chamber, and the support frame and the gas collection box The lower half of the box jointly defines the second gas collection chamber; the atmosphere-modulating membrane is arranged on the support frame.

Because the refrigerating and freezing device of the present invention includes a gas separator with a modified atmosphere membrane and two gas collection chambers, the gas is separated into oxygen and nitrogen-enriched gas, so that the nitrogen-enriched gas can be filled into the modified atmosphere fresh-keeping space Form a gas atmosphere that is rich in nitrogen and deficient in oxygen to facilitate food preservation. This gas atmosphere reduces the intensity of aerobic respiration of fruits and vegetables by reducing the oxygen content in the fruit and vegetable storage space, while ensuring basic respiration and preventing anaerobic respiration of fruits and vegetables, so as to achieve The purpose of long-term preservation of fruits and vegetables.

Furthermore, since the gas separator in the refrigerating and freezing device of the present utility model is an inflatable type, there is sufficient nitrogen-rich gas in the air-conditioned fresh-keeping space, which can solve the problem of negative pressure in the air-conditioned fresh-keeping space using vacuum fresh-keeping and other technologies. , so that users can operate more quickly and conveniently when opening the modified atmosphere fresh-keeping space to access items.

Further, since the air suction pump in the refrigerating and freezing device of the present invention is arranged on the top of the box body, the top space of the refrigerating and freezing device can be fully utilized to prevent storage compartments on the top of the existing refrigerating and freezing device caused by the high height of the refrigerating and freezing device. Space cannot be fully utilized. And when the compressor is also arranged on the top of the refrigerating and freezing device, the volume of the lower storage space becomes larger, although the total storage space volume of the refrigerating and freezing device may not change, the top storage space that cannot be fully utilized The rear part is fully utilized, and the lower storage space becomes larger, which in a sense also significantly increases the storage volume and improves user convenience. In addition, when the compressor is installed at the lower part of the refrigerating and freezing device, it can solve the problem of resonance between the compressor and the air pump and the problem of heat superposition, and can significantly reduce noise. Therefore, the refrigerating and freezing device of the present utility model arranges the air suction pump on the top of the casing, which has unexpected technical effects.

Furthermore, the refrigerating and freezing device of the present utility model not only has a good fresh-keeping effect, but also has relatively low requirements on the rigidity and strength of storage containers, etc., and the implementation requirements are very low, so the cost is also very low. Moreover, the refrigerating and freezing device of the present utility model well solves the above-mentioned technical problems that those skilled in the field of controlled atmosphere preservation have been eager to solve but have not been able to solve successfully. The refrigerating and freezing device of the utility model is not only small in volume, but also low in noise, and is especially suitable for family and personal use.

Further, the refrigerating and freezing device of the present invention is preferably a household refrigerator, for example, a household compression direct cooling refrigerator, a household compression air-cooling refrigerator, a semiconductor refrigeration refrigerator, and the like.

According to the following detailed description of specific embodiments of the utility model in conjunction with the accompanying drawings, those skilled in the art will be more aware of the above and other objectives, advantages and features of the utility model.

Description of drawings

Hereinafter, some specific embodiments of the present utility model will be described in detail in an exemplary rather than restrictive manner with reference to the accompanying drawings. The same reference numerals in the drawings designate the same or similar parts or parts. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the attached picture:

Fig. 1 is a schematic structural diagram of a refrigerating and freezing device according to one embodiment of the present invention;

Fig. 2 is a schematic structural diagram of a refrigerating and freezing device according to an embodiment of the present invention with part of the structure hidden;

Fig. 3 is a schematic structural diagram of a refrigerating and freezing device according to an embodiment of the present invention with part of the structure hidden;

Fig. 4 is a schematic structural diagram of a refrigerating and freezing device according to an embodiment of the present invention with part of the structure hidden;

Fig. 5 is a schematic cross-sectional view of a gas separator in a refrigerating and freezing device according to an embodiment of the present invention;

Fig. 6 is a schematic exploded view of an air pump assembly in a refrigerating and freezing device according to an embodiment of the present invention;

Fig. 7 is a schematic diagram of a storage container in a refrigerating and freezing device according to an embodiment of the present invention.

detailed description

Fig. 1 is a schematic structural diagram of a refrigeration and freezing device according to an embodiment of the present invention. As shown in Figure 1 and with reference to Figures 2 to 4, the embodiment of the present invention provides a refrigeration and freezing device, which may include a box body 20, a main door body, a gas separator 30, an air pump 41 and a refrigeration system.

A storage space 200 is defined in the box body 20 . For example, the box body 20 may include an inner container defining a storage space 200 therein. The main door body can be composed of two side-by-side door bodies 28 , and the two side-by-side door bodies 28 can be rotatably mounted on the box body 20 and configured to open or close the storage space 200 defined by the box body 20 . The main door body can also be a door body. Further, a storage container 21 is provided in the storage space 200 , and a modified atmosphere fresh-keeping space 210 is provided in the storage container 21 . The modified atmosphere fresh-keeping space 210 can be a closed space or a nearly closed space. Preferably, the storage container 21 is a drawer assembly. The storage container 21 may include a drawer cylinder 22 and a drawer body 23 . The drawer cylinder 22 may have a front opening, and is disposed in the storage space 200 , specifically, may be disposed at a lower portion of the storage space 200 . As those skilled in the art can recognize, the drawer cylinder 22 can also be disposed in the middle or upper part of the storage space 200 . The drawer body 23 is slidably disposed in the drawer barrel 22 to be operable to be drawn out from the front opening of the drawer barrel 22 and inserted inward into the drawer barrel 22 . The drawer body 23 may have a drawer end cover, and the drawer end cover may cooperate with the opening of the drawer barrel 22 to seal the modified atmosphere fresh-keeping 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.

The refrigeration system is configured to provide cooling to the storage space 200 . Specifically, in some embodiments, the refrigeration system may be a refrigeration cycle system composed of a compressor, a condenser, a throttling device, an evaporator, and the like. The evaporator is configured to provide cooling directly or indirectly into the storage space 200 . For example, when the refrigerating and freezing device is a domestic compression direct cooling refrigerator, the evaporator can be arranged outside or inside the rear wall of the inner container. When the refrigerating and freezing device is a household compressed air-cooled refrigerator, there is also an evaporator room in the box body 20, and the evaporator room is communicated with the storage space 200 through the air duct system, and an evaporator is arranged in the evaporator room, and an evaporator is provided at the outlet. The fan is used to circulate refrigeration to the storage space 200 . In other embodiments, the refrigeration system may also be a semiconductor refrigeration device.

Fig. 5 is a schematic cross-sectional view of a gas separator in a refrigerating and freezing device according to an embodiment of the present invention. As shown in FIG. 5 , the gas separator 30 has a modified atmosphere membrane 300 , a first gas collection chamber 310 and a second gas collection chamber 320 . The atmosphere-modulating membrane 300 is located between the first gas collection chamber 310 and the second gas collection chamber 320 to separate the first gas collection chamber 310 from the second gas collection chamber 320 . The first gas collection chamber 310 is configured to communicate with the external space of the gas separator 30 (such as the storage space 200, the space outside the box body 20, etc.) in a controlled manner, so that the pressure in the first gas collection chamber 310 is lower than that of the gas separator. When the pressure of the external space, the air in the external space of the gas separator enters the first gas collection chamber 310, and the atmosphere-modulating membrane 300 is configured so that when the pressure of the first gas collection chamber 310 is greater than the pressure of the second gas collection chamber 320, the Oxygen in the air in the first gas collection chamber 310 is more permeable to the second gas collection chamber 320 through the atmosphere-modulating membrane 300 than the nitrogen therein, and the first gas collection chamber 310 is also configured to be controlled with the air-conditioning fresh-keeping space 210, so that when the pressure of the first gas collection chamber 310 is greater than the pressure of the controlled atmosphere fresh-keeping space 210, the air entering the first gas collection chamber 310 will be removed from the air that has passed through the atmosphere-modified membrane 300 and enter the second gas collection chamber 320. The rest of the gas enters the modified atmosphere fresh-keeping space 210, so that a nitrogen-rich and oxygen-poor gas atmosphere is obtained in the modified atmosphere fresh-keeping space 210 to facilitate food preservation. The air suction pump 41 can communicate with the second gas collection chamber 320 through the pipeline 50 to force the gas in the second gas collection chamber 320 to flow out of the gas separator 30 .

That is to say, in the gas separator 30, the atmosphere-modulating membrane 300 is configured so that the oxygen in the air in the first gas collection chamber 310 is more permeable to the second gas collection chamber 320 than the nitrogen gas therein. . The first gas collection chamber 310 is controlled to communicate with the external space of the gas separator 30, so that the air in the external space of the gas separator 30 enters the first gas collection chamber 310, and the first gas collection chamber 310 is also controlled to communicate with the external space of the gas separator 30. The modified atmosphere fresh-keeping space 210 communicates with each other so that the rest of the air entering the first gas collection chamber 310 after removing the gas that has passed through the modified atmosphere membrane 300 and entered the second gas collection chamber 320 enters the modified atmosphere fresh-keeping space 210 . The suction pump 41 is configured to pump the gas penetrating into the second gas collection chamber 320 to the outside of the gas separator 30 .

Specifically, the air suction pump 41 makes the gas in the second gas collection chamber 320 flow out through the pipeline 50 by pumping air outward, thereby reducing the pressure of the second gas collection chamber 320 . When the pressure of the second gas collection chamber 320 is lower than the pressure of the first gas collection chamber 310, the gas such as oxygen with a relatively fast permeation rate in the air in the first gas collection chamber 310 enters the first gas collection chamber 310 under the action of the pressure and the atmosphere-modulating membrane 300. Two gas collection chambers 320. At this time, because part of the oxygen in the first gas collection chamber 310 enters the second gas collection chamber 320, other gases with a relatively slow permeation rate containing only a small amount of oxygen or no oxygen are formed in the first gas collection chamber 310, that is, It is a nitrogen-rich gas. Furthermore, the pressure of the first gas collection chamber 310 decreases due to the reduction of oxygen in the gas, so that the air in the storage space 200 enters the first gas collection chamber 310 due to the pressure difference, and is discharged by the air suction pump 41 and the air. Under the action of the adjustable membrane 300 , gases such as oxygen with a relatively fast permeation rate in the air entering the first gas collection chamber 310 are continuously discharged into the second gas collection chamber 320 . That is to say, the air suction pump 41 makes the air in the storage space 200 continue to enter the gas separator 30 by pumping air outwards, and under the action of the atmosphere-modulating membrane 300, forms in the first gas collection chamber 310 to remove the air that has entered the second gas separator. The rest of the gas in the gas collection chamber 320 is nitrogen-enriched gas. At this time, the first gas collection chamber 310 can be controlled to communicate with the modified atmosphere fresh-keeping space 210 , so that the nitrogen-enriched gas can be filled into the modified atmosphere fresh-keeping space 210 .

The refrigerating and freezing device of the utility model can form a nitrogen-rich and oxygen-poor gas atmosphere in the controlled atmosphere fresh-keeping space 210 to facilitate food preservation. The gas atmosphere can reduce the intensity of aerobic respiration of fruits and vegetables by reducing the oxygen content in the fruit and vegetable preservation space, and at the same time Ensure basic respiration, prevent anaerobic respiration of fruits and vegetables, so as to achieve the purpose of long-term preservation of fruits and vegetables.

In some embodiments of the present invention, a receiving space 24 is defined at the rear of the top of the box body 20 to accommodate the air pump 41 . In this embodiment, the inventor of the utility model found that the rear part of the storage space on the top of the existing refrigerating and freezing device is often left idle without putting items in it. The possible reason is that the refrigerating and freezing device is too high or too deep, or other reasons, which are inconvenient for users The article is put into, and the inventor of the utility model of the present application creatively utilizes this space, and then sets an accommodating space 24 for accommodating the air pump 41 here. Further, the accommodating space 24 extends along the width direction (transverse direction) of the box body 20, the upper edge of the front wall of the accommodating space 24 is in front of the lower edge, and the front wall of the accommodating space 24 extends from its upper edge The bend extends to its lower edge, and the front wall can also be in the shape of an inclined plate. The storage space 200 includes a first space in front of the front wall of the receiving space 24 and a second space below the bottom wall of the receiving space 24 .

In some embodiments of the present invention, the storage space 200 is a refrigerated space, and its storage temperature is generally between 2°C to 10°C, preferably 3°C to 8°C. Further, the box body 20 can also define a freezing space 25 and a temperature-changing space 26 , the freezing space 25 is arranged below the storage space 200 , and the temperature-changing space 26 is arranged between the freezing space 25 and the refrigerating space. The temperature range in the freezer space 25 is generally -14°C to -22°C. The variable temperature space 26 can be adjusted according to demand, so as to store suitable food. In some alternative embodiments of the present utility model, the storage space 200 can also be a freezing space or a variable temperature space, that is to say, the temperature range of the storage space 200 can be controlled at -14°C to -22°C or as required. Adjustment. Further, the relative positions of the refrigerating space, the freezing space 25 and the variable temperature space 26 can be adjusted according to actual needs.

In some embodiments of the present utility model, when the refrigeration system includes a compressor, the compressor can be arranged at the bottom rear of the box body 20, so that the compressor and the suction pump 41 can be sufficiently separated to prevent heat superposition and noise overlay. In some preferred embodiments of the present invention, the compressor can be installed in the accommodation space 24, and at this time, the user-friendly bottom storage space can be significantly increased.

In some embodiments of the present invention, the air pump 41 is disposed at one lateral end of the accommodation space 24 . The compressor can be arranged at the other lateral end of the accommodation space 24, so that the distance between the suction pump 41 and the compressor is relatively long, so as to reduce superposition of noise and waste heat. A compressor may also be located adjacent to the suction pump 41 .

Fig. 6 is a schematic exploded view of the air pump assembly 40 in the refrigerating and freezing device according to one embodiment of the present invention; further in order to reduce noise, as shown in Fig. 6, in some embodiments of the present utility model, the refrigerating and freezing device A mounting top plate 42 and a sealing box 43 may also be included. The installation top plate 42 can be installed on the top surface of the accommodation space 24 through a plurality of shock-absorbing pads 44 . The sealing box 43 is installed on the installation top plate 42 . The suction pump 41 is installed in the sealed box 43 . That is to say, the air pump 41 can be disposed inside a sealed box 43 , and the sealed box 43 can be installed in the containing space 24 through the installation top plate 42 . The sealing box 43 , the mounting top plate 42 and the air pump 41 may also be referred to as an air pump assembly 40 . When the suction pump 41 is running, the sealed box 43 can largely block noise and/or waste heat from spreading outward. Further, in order to improve the effect of shock and noise reduction, a plurality of shock-absorbing foot pads 44 (which may be made of rubber) can also be installed on the installation top plate 42 . The number of vibration-damping foot pads 44 is preferably four, and the four vibration-damping foot pads 44 are installed in the foot pad installation holes provided at the four corners of the installation top plate 42 .

In some embodiments of the present utility model, a mounting frame is arranged inside the sealing box 43, and the mounting frame is connected with the inner wall of the sealing box 43 through a plurality of damping pads, and the air pump 41 is fixed inside the mounting frame, so as to reduce the suction pressure. Vibration and noise during air pump 41 operation. Specifically, two vibration-damping pads are provided on the top of the installation frame, and the vibration-damping pads are sleeved on the positioning columns on the top surface of the sealing box 43 . One opposite side of the installation frame is respectively provided with a circular vibration-damping pad, and is clamped in the slot of the corresponding side wall of the sealing box 43 . A shock-absorbing spacer is respectively fixed on the other opposite two sides of the installation frame. The air suction pump 41 can be located between the vibration-damping pads in the sealed box 43 and fastened to the installation frame by screws.

In order to facilitate heat dissipation, heat dissipation holes are provided at both lateral ends of the top wall and rear wall of the accommodation space 24 to increase the heat dissipation effect and ensure the stability of the compressor and air pump 41 . Further, accommodate. The refrigerating and freezing device may also include a cooling fan to promote the flow of cooling air.

The pipeline 50 may include connecting pipe sections extending from top to bottom. The connecting pipe section is arranged behind the storage space 200 , and the upper end of the connecting pipe section communicates with the inlet of the air pump 41 , and the lower end of the connecting pipe section communicates with the second gas collection chamber of the gas separator 30 . The connecting pipe section can be set close to the side shell and the back plate of the box body 20, and the connecting pipe section can be fitted with an insulation sleeve or an insulating tube, which can prevent the cold energy in the oxygen in the connecting pipe section from being transferred to the side shell and the back plate, and prevent condensation. .

In some embodiments of the present invention, as shown in FIG. 5 , the gas separator 30 may include a gas collection box 31 . The gas collection box 31 is provided with a horizontally placed support frame 32. The support frame 32 and the upper half of the gas collection box 31 jointly define a first gas collection chamber 310. The support frame 32 and the lower half of the gas collection box 31 The boxes together define a second gas collection chamber 320 . Further, the atmosphere-modulating membrane 300 can be arranged on the supporting frame 32 , and the two surfaces of the atmosphere-modulating membrane 300 face the upper half of the box body and the lower half of the box body of the gas collecting box 31 respectively.

In some embodiments of the present invention, the gas collecting box 31 may also be provided with three vent holes that can be opened in a controlled manner. The three vent holes can be respectively the first vent hole for allowing the air in the storage space 200 to enter the first gas collection chamber 310, and the second vent hole for making the nitrogen-enriched gas be filled into the modified atmosphere fresh-keeping space 210 from the first gas collection chamber 310. A vent hole and a third vent hole for allowing the oxygen-enriched gas to flow out of the second gas collection chamber 320 .

That is to say, the first gas collection chamber 310 can communicate with the storage space 200 through the first vent hole. Specifically, when the pressure of the first gas collection chamber 310 is lower than the pressure of the storage space 200, the first ventilation hole is opened under control. At this time, the second vent hole is controlled to be closed, so that the pressure of the first gas collection chamber 310 is increased, and a large amount of nitrogen-rich gas is formed. It can be understood that the pressure of the first gas collection chamber 310 will continue to rise because gases with a relatively slow permeation rate such as nitrogen cannot pass through the atmosphere-modulating membrane 300 to enter the second gas collection chamber 320 in large quantities. When the pressure of the first gas collection chamber 310 is greater than or equal to the pressure of the storage space 200, the first vent hole can be closed in a controlled manner, and at this time the second vent hole can be opened in a controlled manner so that the air in the first gas collection chamber 310 A large amount of nitrogen-enriched gas flows to the controlled atmosphere fresh-keeping space 210. The third vent hole can be kept open when the first vent hole and/or the second vent hole are opened, so that the oxygen-enriched gas in the second gas collection chamber 320 can be sucked out by the air pump 41 in time, thereby promoting the storage space 200 The inner air continues to flow into the first gas collection chamber 310 . In some embodiments of the present invention, the second ventilation hole can also be configured to be opened with a time delay. Specifically, when the first vent hole is opened, the second vent hole is opened after waiting for a preset time, so that sufficient nitrogen-rich gas is formed in the first gas collection chamber 310 .

In some embodiments of the present utility model, the refrigerating and freezing device may further include an axial flow fan 60 . The axial flow fan 60 can be arranged on the flow path from the first gas collection chamber 310 to the controlled atmosphere fresh-keeping space 210, configured to be activated in a controlled manner, and promote the removal of air in the first gas collection chamber 310 that has passed through the modified atmosphere membrane 300 to enter The rest of the gas in the second gas collection chamber 320 is accelerated to flow to the modified atmosphere fresh-keeping space 210 . Specifically, the axial flow fan 60 is set such that its air inlet faces the first gas collection chamber 310, and its air outlet faces the controlled atmosphere fresh-keeping space 210, so as to accelerate the flow of nitrogen-enriched gas flowing out of the first gas collection chamber 310 to the controlled atmosphere. Fresh-keeping space 210. Further, the axial flow fan 60 can be configured to be turned on when the second air hole is opened.

In some embodiments of the present invention, as shown in FIG. 3 , the gas separator 30 may be disposed inside the storage space 200 and located at the rear side of the drawer cylinder 22 . That is to say, the gas separator 30 can be independently and integrally arranged outside the modified atmosphere fresh-keeping space 210, so that it is easy to install and disassemble.

In some embodiments of the present invention, as shown in FIG. 7 , a plurality of air pressure balance holes 221 may be opened on the drawer cylinder 22 , and the storage space 200 and the modified atmosphere fresh-keeping space 210 are communicated through the plurality of air pressure balance holes 221 . The air pressure balance holes 221 may be millimeter-sized micro holes, for example, the diameter of each air pressure balance hole 221 is 0.1 mm to 3 mm. Setting a plurality of air pressure balance holes 221 can keep the pressure in the air-conditioned fresh-keeping space 210 from being too high. Specifically, when the pressure in the air-conditioned fresh-keeping space 210 is too high, a small amount of gas in the air-conditioned fresh-keeping space 210 can be balanced by air pressure. The hole 221 flows into the storage space 200 to prevent the pressure of the modified atmosphere fresh-keeping space 210 from being too high. When a small amount of gas flows out of the controlled atmosphere fresh-keeping space 210 , the nitrogen-rich and oxygen-poor gas atmosphere in the controlled-atmosphere fresh-keeping space 210 does not change, or the change is negligible.

In some embodiments of the present utility model, a locking device, a handle and a handle positioning device are arranged between the drawer body 23 and the drawer cylinder 22 . The locking device includes pivoting latches arranged on both sides of the drawer end cover, two fastening parts arranged on the drawer barrel 22 , and a snap-in promoting device. Each fastening portion may be a protrusion. The snapping promoting device can be used to prompt the two pivotal locks to rotate toward the directions of being snapped into the respective fastening portions (ie respective first directions). The handle extends horizontally and is slidably installed on the drawer end cover along the vertical direction. Moreover, when the drawer body 23 is in the closed state, the position of the handle may be the initial position of the handle. And the handle is configured such that when the handle is in its initial position, its two ends are in contact with the two pivoting locks respectively, so as to prevent each pivoting lock from rotating in another direction opposite to the corresponding first direction, so that The pivoting lock is kept in a mating state with the engaging portion, so as to lock the drawer body 23 to the drawer cylinder 22 . Further, when the handle is moved up or down to the unlocked position, that is, after moving from the initial position to the locked position, each pivotal lock can be allowed to rotate in another direction opposite to its corresponding first direction. , so as to allow when the drawer body 23 is pulled outward, the pivotal latch rotates and disengages from the corresponding buckle portion, thereby allowing the drawer body 23 to be opened. The handle positioning device is configured to keep the handle at each predetermined position after the handle is moved to that position, mainly the initial position and the unlocked position. When opening the drawer body 23, the user first moves the handle up or down to the unlocked position, and the handle positioning device keeps the handle at this position, and the user can pull the drawer body 23 outwards. When closing the drawer body 23, the user first closes the drawer body 23, and then makes the handle go down or up to return to the initial position, and the handle positioning device keeps the handle at this position, so that the drawer body 23 and the drawer cylinder 22 remain locked. state.

In order to further stabilize the movement of the handle, guide rods and sliders are respectively provided at both ends of the handle, and the guide rods extend vertically. The drawer body 23 also includes two groups of slideways, and each group of slideways has at least three vertically extending chute slots, so that both sides of the guide bar have a chute slot respectively, and the slider moves on the remaining chute slots, or The two sides of the slide block respectively have a slide groove, and the guide rod moves on the remaining slide grooves. For example, each set of slideways may include four slide grooves, one slide groove is respectively provided on the front and rear sides of the guide bar, and one slide groove is respectively provided on the lateral sides (ie, left and right sides) of the slider.

So far, those skilled in the art should recognize that although a number of exemplary embodiments of the present invention have been shown and described in detail herein, they can still be used according to the present invention without departing from the spirit and scope of the present invention. Many other variations or modifications that conform to the principles of the utility model are directly determined or derived from the disclosed content of the new model. Therefore, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims (10)

1. a kind of refrigerating device, it is characterised in that including：

Define and be provided with storage space, the storage space in container for storing, the container for storing in casing, the casing With controlled atmosphere space；

Gas separator, the gas separator has controlled atmosphere film, first gas collecting chamber and second gas collecting chamber, the gas Film is adjusted to be located between the first gas collecting chamber and the second gas collecting chamber；The controlled atmosphere film is arranged so that described Oxygen in one gas collection chamber air more enters second gas relative to nitrogen therein through the controlled atmosphere film Body collecting chamber；Exterior space of the first gas collecting chamber controllably with the gas separator is connected, so that the gas The air of the exterior space of separator enter the first gas collecting chamber, and the first gas collecting chamber also controllably with institute The connection of controlled atmosphere space is stated, so as to enter through the controlled atmosphere film into removing in the air in the first gas collecting chamber Enter the remaining gas after the gas of the second gas collecting chamber into the controlled atmosphere space；With

Aspiration pump, the aspiration pump is arranged at the top of casing, is connected via pipeline with the second gas collecting chamber, will be saturating The gas entered in the second gas collecting chamber is pumped to outside the gas separator.

2. refrigerating device according to claim 1, it is characterised in that also include：

Axial flow blower, is arranged on the first gas collecting chamber to the flow path in the controlled atmosphere space, be configured to by Control ground starts, to promote the remaining gas to flow into the controlled atmosphere space.

3. refrigerating device according to claim 1, it is characterised in that

The container for storing is drawer appliance, including：

Drawer cylinder, with preceding to opening, and is arranged in the storage space；With

Drawer body, is slidably disposed in the drawer cylinder, with from the forward direction opening of the drawer cylinder operationally Outwards extract and be inwardly inserted into the drawer cylinder out.

4. refrigerating device according to claim 1, it is characterised in that

The rear portion on the top of the casing, which is defined, contains space, to accommodate the aspiration pump.

5. refrigerating device according to claim 4, it is characterised in that also include：

Refrigeration system, is configured to provide cold to the storage space, and

The refrigeration system has compressor, is installed on described contain in space.

6. refrigerating device according to claim 4, it is characterised in that also include：

Top plate is installed, the top surface for containing space is installed on by multiple shock absorption footpads；With

Seal box, is installed on the installation top plate；And

The aspiration pump is installed in the seal box.

7. refrigerating device according to claim 6, it is characterised in that

The transverse ends of the roof for containing space and the transverse ends of rear wall offer heat emission hole；

The aspiration pump is arranged at described horizontal one end for containing space.

8. refrigerating device according to claim 4, it is characterised in that

The upper edge of the antetheca for containing space is in the front of lower edge；And

The storage space includes first space in the front in the antetheca for containing space, and contains sky in described Between bottom wall lower section second space.

9. refrigerating device according to claim 3, it is characterised in that

The gas separator is arranged inside the storage space, and positioned at the rear side of the drawer cylinder.

10. refrigerating device according to claim 1, it is characterised in that the gas separator also includes：

Collector box, is provided with the support frame of horizontal positioned, the support frame and the first half box body of the collector box in it The first gas collecting chamber is limited jointly, and the support frame and the lower half box body of the collector box limit institute jointly State second gas collecting chamber；

The controlled atmosphere film is arranged in the support frame.