CN206514591U - Refrigerating equipment - Google Patents

Abstract

The utility model provides a refrigerating and freezing device. The refrigerating and freezing equipment includes: a box body, which defines a storage space and a compressor compartment, a storage container is arranged in the storage space, and a fresh-keeping space is defined inside the storage container; an oxygen-enriched membrane module has at least one Oxygen membrane and an oxygen-enriched membrane collection chamber, and configured so that the oxygen in the gas flow around the oxygen-enriched membrane module is more permeated through the oxygen-enriched membrane and enters the oxygen-enriched gas collection chamber relative to the nitrogen in it; The gas in the oxygen-enriched gas collection chamber is exhausted to the outside of the storage container; and the refrigeration system is configured to provide cold energy to the storage space, so that the actual temperature in the fresh-keeping space is in the range of 0°C to 10°C. The refrigerating and freezing equipment of the utility model combines a suitable storage temperature range with a nitrogen-rich and oxygen-poor gas atmosphere, which can suppress the respiration rate of the food in the fresh-keeping space and effectively prolong the fresh-keeping period of the food.

Description

Refrigeration and freezing equipment

technical field

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

Background technique

With the development of society and the improvement of people's living standards, and people's pace of life is getting faster and faster, people often buy a large number of items placed in various refrigeration and freezing equipment, but for leafy vegetables and melon and fruit ingredients, refrigeration and freezing The low temperatures in the appliance's storage space not only wrinkle and blotch the skin of these foods, but also affect their original taste and nutrition.

Modified atmosphere preservation technology generally refers to the technology of prolonging the storage life of food materials by adjusting the gas atmosphere (gas composition ratio or gas pressure) in the closed space where the storage is located. The basic principle is: in a certain closed space A gas atmosphere different from normal air components is obtained through various adjustment methods to inhibit the physiological and biochemical processes and microbial activities that cause the storage (usually food) to deteriorate. In particular, in this application, the discussed modified atmosphere fresh-keeping will be specifically aimed at the modified-atmosphere fresh-keeping technology that adjusts the ratio of gas components.

Those skilled in the art all know that normal air composition includes (by volume percentage, hereinafter the same): about 78% nitrogen, about 21% oxygen, about 0.939% rare gas (helium, neon, argon, krypton, xenon, radon), 0.031% carbon dioxide, and 0.03% other gases and impurities (eg, ozone, nitric oxide, nitrogen dioxide, water vapor, etc.). In the field of controlled atmosphere fresh-keeping, nitrogen-rich gas is usually filled into the closed space to reduce the oxygen content to obtain a nitrogen-rich and oxygen-poor fresh-keeping gas atmosphere, but the nitrogen-generating equipment traditionally used for controlled atmosphere fresh-keeping is bulky and expensive As a result, this technology is basically limited to use in various large-scale professional storage warehouses (the storage capacity is generally at least 30 tons), and it is not suitable for home or individual users. In addition, only by adjusting the concentration of nitrogen and oxygen gas cannot fully promote Food preservation effect.

Utility model content

One purpose of the utility model is to improve the effect of modified atmosphere preservation.

A further purpose of the utility model is to prolong the preservation period of various food materials in the refrigerating and freezing equipment.

In particular, the utility model provides a refrigerating and freezing device, which includes: a box body, a storage space and a compressor compartment are defined in the box body, a storage container is arranged in the storage space, and the inside of the storage container A fresh-keeping space is defined; the door body is arranged on the front surface of the box to close the storage space; the oxygen-enriched membrane module is arranged in the storage container and its surrounding space communicates with the fresh-keeping space. Oxygen membrane and an oxygen-enriched membrane collection cavity, and configure so that the oxygen in the airflow around the oxygen-enriched membrane module enters the oxygen-enriched gas collection cavity through the oxygen-enriched membrane more than the nitrogen in it; The machine compartment, the inlet end of which is connected to the oxygen-enriched gas collection chamber of the oxygen-enriched membrane module through a pipeline, so as to exhaust the gas penetrating into the oxygen-enriched gas collection chamber to the outside of the storage container; The food space provides cooling capacity so that the actual temperature in the fresh-keeping space is in the range of 0°C to 10°C.

Optionally, the refrigerating and freezing equipment further includes: a temperature sensor disposed in the fresh-keeping space to monitor the actual temperature in the fresh-keeping space.

Optionally, the refrigeration system includes: a compressor, a condenser, a throttling device and an evaporator, and the compressor is arranged in a compressor chamber.

Optionally, the box body includes: an inner container defining a storage space therein.

Optionally, the refrigerating and freezing equipment is a direct cooling refrigerator, and the evaporator is arranged outside or inside the rear wall of the inner container.

Optionally, the refrigeration system is further configured to adjust the operating state of the compressor, so that the actual temperature in the fresh-keeping space is in the range of 0°C to 10°C.

Optionally, the refrigerating and freezing equipment is an air-cooled refrigerator, an evaporator chamber for accommodating the evaporator is arranged inside the box, and an air passage from the evaporator chamber to the fresh-keeping space is defined on the back of the liner, and a damper is arranged on the air passage to Adjust the volume of cold air sent to the fresh-keeping space.

Optionally, the refrigeration system is further configured to adjust the operating state of the compressor and/or the opening and closing of the damper, so that the actual temperature in the fresh-keeping space is in the range of 0°C to 10°C.

Optionally, the storage container is a sealed drawer, and the fresh-keeping space is defined by the sealed drawer, and the sealed drawer includes: a drawer cylinder, which has a forward opening, and is fixed to the inner container, and the fresh-keeping space is defined therein; and the drawer body, Slidably mounted within the drawer barrel to be operable to be withdrawn outwardly from and inserted inwardly into the drawer barrel through the forward opening of the drawer barrel.

Optionally, the oxygen-enriched membrane module further includes a support frame, which has a first surface and a second surface parallel to each other, and the support frame is formed with a support frame respectively extending on the first surface, extending on the second surface, and penetrating the support frame. The frame connects multiple airflow channels on the first surface and the second surface, and the multiple airflow channels together form an oxygen-enriched gas collection chamber, and at least one oxygen-enriched membrane is two planar oxygen-enriched membranes, which are respectively laid on the first surface of the supporting frame. on one surface and the second surface.

The refrigeration and freezing equipment of the utility model has an oxygen-enriched membrane module and an air pump, wherein the space around the oxygen-enriched membrane module communicates with the fresh-keeping space, and the oxygen-enriched membrane module has at least one oxygen-enriched membrane and an oxygen-enriched membrane collection cavity, and is configured as Make the oxygen in the airflow around the oxygen-enriched membrane module pass through the oxygen-enriched membrane more than the nitrogen in it into the oxygen-enriched gas collection chamber, and the air pump can pump the gas penetrating into the oxygen-enriched gas collection chamber to the storage Outside the container, so that the gas atmosphere rich in nitrogen and deficient in oxygen can be realized in the fresh-keeping space, which is conducive to food preservation. The refrigeration system of the refrigerating and freezing equipment is configured to provide cold energy to the storage space, so that the temperature in the fresh-keeping space is between 0°C and 10°C The temperature range, combined with the nitrogen-rich and oxygen-deficient gas atmosphere, can suppress the respiration rate of the food in the fresh-keeping space and effectively extend the fresh-keeping period of the food.

Furthermore, the refrigeration and freezing equipment of the present utility model monitors the actual temperature in the fresh-keeping space through the temperature sensor installed in the fresh-keeping space. The refrigerating equipment is a direct-cooling refrigerator, which can adjust the operating state of the compressor. If the refrigerating and freezing equipment is an air-cooled refrigerator, it can adjust the operating state of the compressor and/or the opening and closing of the damper to ensure that the actual temperature in the fresh-keeping space is at The temperature range that promotes the effect of controlled atmosphere preservation, and can refine the temperature range according to the type of ingredients, so that the actual temperature in the fresh-keeping space is more in line with the preservation needs of different types of ingredients, and further improves the preservation effect of ingredients.

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 partial structural diagram of a refrigerating and freezing device according to an embodiment of the present invention;

Fig. 3 is a schematic structural diagram of another perspective of the structure shown in Fig. 2;

Fig. 4 is a schematic structural view of a sealed drawer in a refrigerating and freezing device according to an embodiment of the present invention;

Figure 5 is a schematic exploded view of the sealed drawer shown in Figure 4;

Fig. 6 is a schematic structural diagram of an oxygen-enriched membrane module in a refrigerating and freezing device according to an embodiment of the present invention;

Fig. 7 is a schematic exploded view of the oxygen-enriched membrane assembly shown in Fig. 6;

Fig. 8 is a schematic structural diagram of the support frame in the oxygen-enriched membrane module shown in Fig. 7; and

Fig. 9 is a schematic structural view of the support frame in the oxygen-enriched membrane module shown in Fig. 7 viewed from another angle.

detailed description

This embodiment provides a refrigerating and freezing device. By combining a nitrogen-rich and oxygen-poor gas atmosphere with an appropriate storage temperature range, it can suppress the respiration rate of ingredients in the fresh-keeping space and effectively prolong the shelf life of the ingredients. The refrigerating and freezing equipment It can be a refrigerator, freezer, etc. Fig. 1 is a schematic structural diagram of a refrigerating and freezing device 100 according to an embodiment of the present utility model; Fig. 2 is a schematic partial structural view of a refrigerating and freezing device 100 according to an embodiment of the present utility model; Fig. 3 is shown in Fig. 2 Schematic block diagram of another view of the structure. The refrigerating and freezing equipment 100 of this embodiment may generally include: a box body 10, a door body, an oxygen-enriched membrane module 31, an air suction pump 40, and a refrigeration system.

Wherein, a storage space 102 and a compressor compartment 104 are defined inside the box body 10 . The number and structure of the storage space 102 can be configured according to the requirements. Figure 1 shows the situation of the first space, the second space and the third space arranged up and down in sequence; the above spaces can be configured as cold storage space and freezing space according to different purposes. , temperature-changing space or fresh-keeping space. Each storage space can be divided into multiple storage areas by partition boards, and items can be stored using shelves or drawers. A storage container may be provided in the storage space 102, and a fresh-keeping space is defined inside the storage container.

The door is disposed on the front surface of the box body 10 for closing the storage space 102 . The door body can be set corresponding to the storage space, that is, each storage space corresponds to one or more door bodies. And the quantity of storage space and door body, the function of storage space can be selected by actual situation. The refrigerating and freezing equipment 100 of this embodiment corresponds to the first space, the second space, and the third space arranged up and down in sequence, and is respectively provided with a first door body 21 , a second door body 22 , and a third door body 23 . The door body can be pivotally arranged on the front surface of the box body, and can also be opened in a drawer type to realize a drawer-type storage space, wherein the drawer-type storage space is often equipped with metal slide rails, which can ensure that the drawer is opened and closed during the process of opening and closing. The effect is gentle and reduces noise. In the refrigerating and freezing apparatus 100 of this embodiment, the door opening method of the first space is pivotal opening, and the door opening methods of the second space and the third space are drawer opening.

As shown in FIG. 2 , the storage container can be a sealed drawer 11 , and the fresh-keeping space is defined by the sealed drawer 11 . In some optional embodiments, the above-mentioned fresh-keeping space may also be defined by a sealed box, a sealed tank, a sealed box, and the like.

As shown in FIG. 3 , the box body 10 may include an inner container 101 defining a storage space 102 therein. Fig. 4 is a schematic structural diagram of the sealed drawer 11 in the refrigerating and freezing device 100 according to an embodiment of the present invention. As shown in Figure 4, the sealed drawer 11 includes: a drawer cylinder 12, which has a forward opening, and is fixed to an inner container 101, which defines a fresh-keeping space; and a drawer body 13, which is slidably installed in the drawer cylinder 12 , so as to be operatively drawn out and inserted into the drawer barrel 12 from the front opening of the drawer barrel 12 . The drawer cylinder 12 can be arranged at the lower part of the inner container, and in some other embodiments, the drawer cylinder 12 can also be arranged at the middle or upper part of the inner container. In this embodiment, the liner 101 and the drawer cylinder 12 can be integrally formed, or formed separately and then installed.

A plurality of air pressure balance holes may be opened on the drawer cylinder 12 to communicate with the storage space 102 and the fresh-keeping space. Each air pressure balance hole may be a millimeter-scale micro hole, for example, the diameter of each air pressure balance hole may be 0.1 mm to 3 mm. Setting multiple air pressure balance holes can balance the pressure inside and outside the fresh-keeping space. The setting of multiple air pressure balance holes will not make the gas in the fresh-keeping space flow to the large storage space, even if the flow is small or even negligible. It will not affect the preservation of food in the fresh-keeping space. In some other embodiments, the air pressure balance hole may not be provided on the drawer cylinder 12. Even so, there is still a large amount of gas in the fresh-keeping space, such as nitrogen in the fresh-keeping space. Too much effort, compared with the existing vacuum storage room, it will save a lot of effort.

FIG. 5 is a schematic exploded view of the sealed drawer shown in FIG. 4 . The oxygen-enriched membrane module 31 is installed in a storage container, in this embodiment, it can be installed in a sealed drawer, and the surrounding space communicates with the fresh-keeping space. As shown in FIG. 5 , the oxygen-enriched membrane module 31 can be arranged on the drawer cylinder 12 , preferably on the top wall of the drawer cylinder 12 . Specifically, an accommodating cavity 121 communicating with the fresh-keeping space is provided in the top wall of the drawer cylinder 12 for accommodating the oxygen-enriched membrane assembly 31 . At least one first ventilation hole 122 and at least one second ventilation hole 123 spaced apart from the at least one first ventilation hole 122 are opened in the wall surface between the accommodating cavity 121 of the top wall of the drawer cylinder 12 and the fresh-keeping space, to respectively The accommodating cavity 121 and the fresh-keeping space are communicated at different positions. Both the first air hole 122 and the second air hole 123 are small holes, and the number can be multiple. In some alternative embodiments, the inner side of the top wall of the drawer cylinder 12 has a concave groove. The oxygen-enriched membrane module 31 is disposed in a recessed groove on the top wall of the drawer cylinder 12 .

In some embodiments of the present utility model, in order to promote the air flow in the fresh-keeping space and the containing cavity 121, the refrigerating and freezing equipment 100 may also include a fan 60, which is arranged in the containing cavity 121, so as to promote the gas in the fresh-keeping space to pass through at least one The first ventilation hole 122, the accommodating cavity 121 and at least one second ventilation hole 123 return to the fresh-keeping space. The fan 60 is preferably a centrifugal fan, and is disposed at the first air hole 122 in the accommodation chamber 121 . That is to say, the centrifugal fan is located above at least one of the first ventilation holes 122 , and the rotation axis is vertically downward, and the air inlet is facing the first ventilation hole 122 . The air outlet of the centrifugal fan can face the oxygen-enriched membrane module 31 . The oxygen-enriched membrane assembly 31 is disposed above the at least one second ventilation hole 123 such that each oxygen-enriched membrane of the oxygen-enriched membrane assembly 31 is parallel to the top wall of the drawer cylinder 12 . At least one first ventilation hole 122 is disposed at the front of the top wall, and at least one second ventilation hole 123 is disposed at the rear of the top wall. That is, the centrifugal fan is arranged at the front of the containing chamber 121 , and the oxygen-enriched membrane module 31 is arranged at the rear of the containing chamber 121 .

Further, the top wall of the drawer cylinder 12 includes a lower plate portion 124 and a cover plate portion 125, a recess is formed in a partial area of the lower plate portion 124, and the cover plate portion 125 is detachably covered on the recess to form an accommodating Cavity 121. In order to facilitate the manufacture of the drawer cylinder 12 , the lower plate portion 124 can be integrally formed with the side wall, bottom wall and rear wall of the drawer cylinder 12 .

The oxygen-enriched membrane assembly 31 has at least one oxygen-enriched membrane and an oxygen-enriched gas collection chamber, and is configured to make the oxygen in the gas flow around the oxygen-enriched membrane assembly 31 more permeate the oxygen-enriched membrane and enter the oxygen-enriched membrane relative to the nitrogen therein. Body collection chamber.

The air pump 40 is arranged in the compressor chamber, and its inlet end communicates with the oxygen-enriched gas collection chamber of the oxygen-enriched membrane module 31 through the pipeline 50, so as to pump the gas penetrating into the oxygen-enriched gas collection chamber to the outside of the storage container , so as to obtain a gas atmosphere rich in nitrogen and poor in oxygen in the fresh-keeping space, which is conducive to the preservation of food materials.

The refrigeration system is configured to provide cold energy to the storage space, so that the actual temperature in the fresh-keeping space is in the range of 0°C to 10°C. This temperature range, combined with the nitrogen-rich and oxygen-poor gas atmosphere, can suppress the respiration rate of the ingredients in the fresh-keeping space and effectively extend the freshness period of the ingredients.

After many experiments, the inventor found that temperature has a significant impact on the respiration of food materials. In the fresh-keeping space, after adjusting the nitrogen-rich and oxygen-poor gas atmosphere, the temperature adjustment has a great effect on prolonging the fresh-keeping period of food materials. For example, put a certain food material into fresh-keeping spaces with the same gas atmosphere and different temperatures, and sample and analyze the gas in the fresh-keeping space every day. As the temperature rises, the oxygen content in the fresh-keeping space decreases faster, and the carbon dioxide content increases. The faster the rate of food is, that is, as the temperature rises, the respiration rate of the food increases, and the low temperature can effectively inhibit the respiration of the food. Moreover, in the gas atmosphere rich in nitrogen and oxygen poor, the suitable storage temperature range of the food is from 0°C to 10°C. In a preferred embodiment, the appropriate storage temperature range can be refined for different ingredients, for example, fruit and vegetable ingredients can be 2°C to 8°C, and the refrigeration temperature of chilled fresh meat ingredients is generally 0°C to 2°C. ℃. It should be noted that the specific values of the above storage temperatures are only examples, not limitations of the present invention.

The refrigerating and freezing device 100 may further include: a temperature sensor disposed in the fresh-keeping space to monitor the actual temperature in the fresh-keeping space. When the actual temperature in the fresh-keeping space is not in the range of 0°C to 10°C, the actual temperature in the fresh-keeping space can be adjusted by adjusting the operating state of the refrigeration system.

Specifically, the refrigeration system includes: a compressor, a condenser, a throttling device and an evaporator, and the compressor is arranged in a compressor compartment. If the refrigerating and freezing equipment is a direct-cooling refrigerator, the evaporator is arranged outside or inside the rear wall of the inner container. The refrigeration system is also configured to adjust the operating state of the compressor so that the actual temperature in the fresh-keeping space is in the range of 0°C to 10°C. If the refrigerating and freezing equipment is an air-cooled refrigerator, there is an evaporator room for the evaporator inside the box, and an air duct from the evaporator room to the fresh-keeping space is defined on the back of the liner. The air volume of cold air in the fresh-keeping space. The refrigeration system is further configured to adjust the operating state of the compressor and/or the opening and closing of the damper, so that the actual temperature in the fresh-keeping space is in the range of 0°C to 10°C. Only adjusting the ratio of nitrogen and oxygen in the fresh-keeping space to achieve a nitrogen-rich and oxygen-poor gas atmosphere cannot fully meet the fresh-keeping needs of food materials. In this embodiment, the fresh-keeping space with a nitrogen-rich and oxygen-poor gas atmosphere is limited to 0°C The suitable storage temperature range can effectively inhibit the respiration of the ingredients in the fresh-keeping space and prolong the fresh-keeping period of the ingredients.

Fig. 6 is a schematic structural diagram of an oxygen-enriched membrane assembly 31 in a refrigerating and freezing device 100 according to an embodiment of the present invention; Fig. 7 is a schematic exploded view of an oxygen-enriched membrane assembly 31 shown in Fig. 6; 9 is a schematic structural view of the support frame 32 in the oxygen-enriched membrane module 31 shown in FIG. 7 viewed from another angle.

As shown in Figures 6 to 9, the oxygen-enriched membrane module 31 includes a support frame 32, and the support frame 32 has a first surface 321 and a second surface 322 parallel to each other, and the support frame 32 is formed on the first surface 321 Extending above, extending on the second surface 322 , and passing through the support frame 32 to communicate with the first surface 321 and the second surface 322 are a plurality of airflow passages 323 . A plurality of gas flow channels 323 jointly form an oxygen-enriched gas collection chamber. The oxygen-enriched membrane 33 in this embodiment is at least one, preferably, two planar oxygen-enriched membranes, which are respectively laid on the first surface 321 and the second surface 322 of the support frame 32 . The oxygen-enriched membrane 33 can allow the oxygen in the outside air to pass through the oxygen-enriched membrane 33 and enter the oxygen-enriched gas collection chamber to form oxygen-enriched gas when the pressure inside it is lower than the pressure outside, so that the air outside it becomes nitrogen-enriched gas.

In some embodiments, the supporting frame 32 includes an air extraction hole 324 communicating with at least one of the plurality of gas flow channels 323 , so as to allow the oxygen-enriched gas in the oxygen-enriched gas collection chamber to be extracted by the air extraction pump 40 . As the oxygen-enriched gas in the oxygen-enriched gas collection chamber is pumped out, the oxygen-enriched gas collection chamber is in a negative pressure state, so the oxygen in the air outside the oxygen-enriched membrane module 31 will continue to pass through the oxygen-enriched membrane 33 and enter the oxygen-enriched gas collection chamber. chamber, so that the air outside the oxygen-enriched membrane module 31 forms a nitrogen-enriched atmosphere. In some embodiments, the aforementioned plurality of airflow passages 323 formed inside the support frame 32 may be a plurality of cavities communicating with the air extraction holes 324 .

In some embodiments, referring to Fig. 7 and Fig. 8, in order to further facilitate the installation, the oxygen-enriched membrane 33 can be pre-fixed in the installation groove 327 of the support frame 32 with a circle of double-sided adhesive tape 325, and then the support frame 32 A circle of sealant 326 is filled in the ring groove 328 of the ring wire, so that the oxygen-enriched membrane 33 is installed in the installation groove 327 of the support frame 32 in a sealed manner.

The oxygen-enriched membrane module uses the different permeation rates of the various components in the air when they pass through the oxygen-enriched membrane. Driven by the pressure difference, the oxygen in the air is preferentially passed through the oxygen-enriched membrane to obtain oxygen. In some other embodiments, the hollow fiber membrane module can also be used to realize a nitrogen-rich and oxygen-poor gas atmosphere in the fresh-keeping space. The hollow fiber membrane module uses the different permeability of each component gas in the air to pass through the hollow fiber membrane. Oxygen molecules are smaller than nitrogen molecules, and oxygen molecules will preferentially pass through the hollow fiber membrane to obtain oxygen.

The air pump 40 of this embodiment can be arranged at one end of the compressor chamber, and the compressor can be arranged at the other end of the compressor chamber, so that the distance between the air pump 40 and the compressor is relatively long, reducing noise superposition and waste heat superposition. For example, the air suction pump 40 may be disposed at one end of the compressor compartment adjacent to the pivoting side of the door body. When the refrigerating and freezing equipment is a side-by-side refrigerator, the air suction pump 40 can be arranged at any end of the compressor compartment. In some other embodiments of the present invention, the air extraction pump 40 is arranged adjacent to the compressor, and the air extraction pump 40 is arranged at one end of the compressor chamber, and is located between the compressor and the side wall of the compressor chamber. The air pump 40 is arranged in the compressor compartment, which can make full use of the space of the compressor compartment and does not occupy other places. Therefore, the extra volume of the refrigeration and freezing equipment will not be increased, and the structure of the refrigeration and freezing equipment can be made compact.

The refrigerating and freezing equipment 100 of the present embodiment has an oxygen-enriched membrane assembly 31 and an air pump 40, wherein the space around the oxygen-enriched membrane assembly 31 communicates with the fresh-keeping space, and the oxygen-enriched membrane assembly 31 has at least one oxygen-enriched membrane and an oxygen-enriched membrane collection chamber, and is configured so that the oxygen in the gas flow around the oxygen-enriched membrane module 31 enters the oxygen-enriched gas collection chamber through the oxygen-enriched membrane more than the nitrogen therein, and the suction pump 40 can penetrate into the oxygen-enriched gas collection chamber The gas is pumped out of the storage container, so that the gas atmosphere rich in nitrogen and oxygen-poor in the fresh-keeping space is conducive to food preservation. The temperature is in the range of 0°C to 10°C. This temperature range combined with the nitrogen-rich and oxygen-poor gas atmosphere can inhibit the respiration rate of the food in the fresh-keeping space and effectively extend the fresh-keeping period of the food.

Further, the refrigeration and freezing equipment 100 of this embodiment monitors the actual temperature in the fresh-keeping space through the temperature sensor installed in the fresh-keeping space. The refrigerating and freezing equipment is a direct-cooling refrigerator, which can adjust the operating state of the compressor. If the refrigerating and freezing equipment is an air-cooled refrigerator, the operating state of the compressor and/or the opening and closing of the damper can be adjusted to ensure the actual temperature in the fresh-keeping space. It is in the temperature range that promotes the fresh-keeping effect of controlled atmosphere, and the temperature range can be refined according to the types of ingredients, so that the actual temperature in the fresh-keeping space is more in line with the fresh-keeping needs of different types of ingredients, and the fresh-keeping effect of ingredients is further improved.

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 equipment, including：

Defined in casing, the casing and container for storing is provided with storage space and compressor bin, the storage space, and institute State and fresh-keeping space is defined inside container for storing；

Door body, is arranged at the preceding surface of the casing, for closing the storage space；

Oxygen-enriched membrane component, is arranged at the container for storing and its surrounding space is connected with the fresh-keeping space, the oxygen permeable membrane group Part has at least one oxygen permeable membrane and an oxygen permeable membrane collecting chamber, and is arranged so that in the oxygen-enriched membrane component surrounding space air-flow Oxygen relative to nitrogen therein more through the oxygen permeable membrane enter the oxygen rich gas collecting chamber；

Aspiration pump, is arranged at the compressor bin, and its entrance point is via pipeline and the oxygen rich gas of the oxygen-enriched membrane component Collecting chamber is connected, and the gas penetrated in the oxygen rich gas collecting chamber is pumped to outside the container for storing；And

Refrigeration system, is configured to provide cold to the storage space, so that the actual temperature in the fresh-keeping space is in 0 DEG C To 10 DEG C of scope.

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

Temperature sensor, is arranged in the fresh-keeping space, to monitor the actual temperature in the fresh-keeping space.

3. refrigerating equipment according to claim 1, it is characterised in that the refrigeration system includes：

Compressor, condenser, throttling arrangement and evaporator, the compressor are arranged at the compressor bin.

4. refrigerating equipment according to claim 3, it is characterised in that the casing includes：

Inner bag, defines the storage space in it.

5. refrigerating equipment according to claim 4, it is characterised in that

The refrigerating equipment is direct cooling refrigerator, and the evaporator is arranged on the outside of the rear surface of the inner bag or inner side.

6. refrigerating equipment according to claim 5, it is characterised in that

The refrigeration system is configured to adjust the running status of the compressor, so that the actual temperature in the fresh-keeping space In 0 DEG C to 10 DEG C of scope.

7. refrigerating equipment according to claim 4, it is characterised in that

The refrigerating equipment is air cooling type refrigerator, and the box house is provided with the evaporator room of the accommodating evaporator, The back of the inner bag defines and is provided with air door on the evaporator room to the air channel in the fresh-keeping space, the air channel, with Regulation is sent to the cold wind air quantity in the fresh-keeping space.

8. refrigerating equipment according to claim 7, it is characterised in that

The refrigeration system is configured to adjust the running status of the compressor and/or the opening and closing of the air door, so that described Actual temperature in fresh-keeping space is in 0 DEG C to 10 DEG C of scope.

9. refrigerating equipment according to claim 4, it is characterised in that

The container for storing is sealed drawer, and the fresh-keeping space is limited by the sealed drawer, and

The sealed drawer includes：Drawer cylinder, with preceding to opening, and is fixed on the inner bag, defines the guarantor in it Fresh space；And drawer body, it is slidably mounted in the drawer cylinder, with can from the forward direction opening of the drawer cylinder Operatively outwards extract and be inwardly inserted into the drawer cylinder out.

10. refrigerating equipment according to claim 1, it is characterised in that

The oxygen-enriched membrane component also includes support frame, and it has the first surface and second surface being parallel to each other, and the branch Extension, the extension on the second surface on the first surface, and through the support respectively is formed with support frame frame Framework is to connect multiple gas channels of the first surface and second surface, and the multiple gas channel is collectively forming the richness Carrier of oxygen collecting chamber, and

At least one described oxygen permeable membrane is two planar shaped oxygen permeable membranes, and the first surface and the of the support frame is laid on respectively On two surfaces.