WO2018099458A1

WO2018099458A1 - Air extracting pump assembly and refrigerating and freezing device

Info

Publication number: WO2018099458A1
Application number: PCT/CN2017/114207
Authority: WO
Inventors: 夏恩品; 张�浩; 何国顺; 王胜飞; 朱小兵
Original assignee: 青岛海尔股份有限公司
Priority date: 2016-12-02
Filing date: 2017-12-01
Publication date: 2018-06-07
Also published as: CN106593821A; CN106593821B

Abstract

An air extracting pump assembly (10) and a refrigerating and freezing device. The air extracting pump assembly (10) comprises a mounting bottom plate (100), a seal box (200), and an air extracting pump (300). A stop portion (110) upwards extending is disposed on the rear part of the upper surface of the mounting bottom plate (100), and the front surface of the stop portion (110) is backwards recessed to form a fixing recessed portion (112). A fixing protruding portion (212) backwards protruding is formed on the rear part of the seal box (200). The seal box (200) is located on the upper side of the mounting bottom plate (100), the fixing protruding portion (212) is clamped into the fixing recessed portion (112), the front part of the seal box (200) is locked to the mounting bottom plate (100), and the air extracting pump (300) is disposed in the seal box (200). The air extracting pump assembly (10) has low running noise, and is convenient to disassemble and assemble in the refrigerating and freezing device.

Description

Air pump assembly and refrigerating and freezing device

The present application claims priority to Chinese Patent Application Serial No. No. No. No. No. No. No. No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No

Technical field

The invention relates to the technical field of refrigerator storage, in particular to an air pump assembly and a refrigerating and freezing device.

Background technique

With the improvement of the quality of life, consumers have higher and higher requirements for food preservation of refrigerators, freezers and other refrigerating and freezing devices. The modified atmosphere preservation technology generally refers to a technique for prolonging the storage life of a food by adjusting the gas atmosphere (gas composition ratio or gas pressure) of the enclosed space in which the storage is located, and the basic principle is: in a certain closed space. A gas atmosphere different from the normal air component is obtained by various adjustment methods to suppress physiological and biochemical processes and microbial activities leading to spoilage of the stored matter (usually the foodstuff). In particular, in the present application, the modified atmosphere preservation will be specifically directed to a modified atmosphere preservation technique that adjusts the proportion of gas components.

It is known to those skilled in the art that normal air components include (by volume percent, hereinafter the same): about 78% nitrogen, about 21% oxygen, about 0.939% rare gases (氦, 氖, argon, krypton, xenon,氡), 0.031% of carbon dioxide, and 0.03% of other gases and impurities (for example, ozone, nitrogen monoxide, nitrogen dioxide, water vapor, etc.. In the field of modified atmosphere preservation, it is usually used to fill the enclosed space with nitrogen-enriched gas. The oxygen content is reduced to obtain a nitrogen-rich and oxygen-poor fresh gas atmosphere. Here, those skilled in the art know that the nitrogen-enriched gas refers to a gas having a nitrogen content exceeding the nitrogen content in the above-mentioned normal air, for example, the nitrogen content may be 95. % to 99%, or even higher; and the nitrogen-rich and oxygen-poor fresh gas atmosphere refers to a gas atmosphere in which the nitrogen content exceeds the above-mentioned normal air nitrogen content and the oxygen content is lower than the oxygen content in the above-mentioned normal air.

The history of modified atmosphere preservation technology dates back to 1821 when German biologists discovered that fruits and vegetables could reduce metabolism at low oxygen levels. But until now, due to the large size and high cost of nitrogen-making equipment traditionally used for gas-conditioning preservation, the technology is basically limited to use in various large-scale professional storage (the storage capacity is generally at least 30 tons). . It can be said that the appropriate gas regulation technology and corresponding equipment can economically reduce and quiet the air-conditioning system, making it suitable for home or individual users. It is a constant desire of technicians in the field of atmosphere preservation and preservation. A technical problem that can be successfully solved.

In addition, the modified atmosphere preservation technology needs to use an air pump to pump out oxygen, but the pump has a relatively high noise operation. Therefore, if the technology is applied to a refrigerator, how to reduce the noise of the air pump is also an urgent problem to be solved.

Summary of the invention

It is an object of the present invention to overcome at least one of the deficiencies of the prior art and to provide an air pump assembly that is capable of reducing the noise propagation during operation of the air pump and that is very convenient to disassemble.

Another object of the present invention is to provide a refrigerating and freezing apparatus using the air pump assembly.

In one aspect, the invention provides an air pump assembly that includes:

The bottom plate is mounted, and a rear portion of the upper surface has an upwardly extending stop portion, and a front surface of the stopper portion is recessed rearward to form a positioning concave portion Crash

a sealing box having a positioning protrusion protruding rearward, the sealing box is located on the upper side of the mounting bottom plate, the positioning protrusion is engaged with the positioning recess, and the front portion of the sealing box is locked to the mounting bottom plate;

The air pump is installed inside the sealed box.

Optionally, the mounting base plate is a sheet metal member, and the stopping portion is an upward flange formed by the mounting bottom plate.

Optionally, the positioning recess is a through hole formed in the flange.

Optionally, the front portion of the sealing box is provided with a screw hole opposite to the threaded hole formed in the mounting base plate to lock the sealing box to the mounting base plate by screws.

Optionally, the sealed box includes: a case body defining an accommodation space having an upper side opening to accommodate the air suction pump; and an upper cover configured to seal the upper side opening of the cover.

Optionally, the air pump assembly further includes a mounting frame disposed inside the casing and disposed between the inner wall of the casing and a plurality of damping blocks; and the air pump is fixed in the mounting frame.

Optionally, the front wall of the sealing box is embedded with an air inlet pipe joint and an air outlet pipe joint that communicate with the inner and outer spaces of the sealing box; the inner and outer ends of the air inlet pipe joint are respectively connected to the air inlet pipe of the air pump and the external connection outside the sealed box. The air pipe; and the inner and outer ends of the air outlet pipe joint are respectively connected to an air outlet pipe of the air pump and an external air outlet pipe outside the sealed box.

Optionally, a plurality of damping pads are mounted on the mounting base.

In another aspect, the present invention provides a refrigerating and freezing apparatus comprising:

a tank body defining a storage space and a compressor compartment therein, wherein the storage space is provided with a storage container, and the storage container has a gas-conditioning space;

a gas regulating membrane module having at least one gas regulating membrane and an oxygen-rich gas collecting chamber, wherein a surrounding space is in communication with the modified atmosphere, the gas regulating membrane module being configured such that oxygen in the space flow around the gas regulating membrane module is relative to Nitrogen in the airflow around the air-conditioning membrane module passes through the gas-regulating membrane into the oxygen-rich gas collection chamber;

An air pump assembly according to any one of the preceding claims, wherein the intake end of the air pump is connected to the oxygen-rich gas collecting chamber of the gas regulating membrane module via a pipeline to penetrate into the oxygen-rich gas collecting chamber The gas is pumped out of the storage container.

Optionally, the air conditioning membrane module further includes a support frame having first and second surfaces parallel to each other, and the support frame is formed with a first extension on the first surface, a second surface, and a through support The frame is configured to connect the plurality of airflow channels of the first surface and the second surface, and the plurality of airflow channels jointly form an oxygen-rich gas collecting chamber; and the at least one gas regulating film is two planar air-conditioning membranes respectively laid on the support frame On a surface and a second surface.

In the air pump assembly of the present invention, the air pump is disposed inside the sealed box, and the sealed box can block the noise from propagating when the air pump is running. In use, the mounting base plate can be fixed in the refrigerating and freezing device, and then the sealing box is mounted on the mounting base plate. When the air pump needs to be replaced or repaired, only the sealing box can be removed without disassembling the mounting base plate. During the installation process, the positioning protrusion at the rear of the sealing box is first inserted into the positioning recess on the mounting bottom plate, and then the front portion of the sealing box is detachably connected to the mounting bottom plate. In this way, not only the stable installation of the sealing box relative to the mounting bottom plate is realized, but also the front part of the sealing box needs to be operated during disassembly and assembly, which is very convenient.

Further, in the air pump assembly of the present invention, the front portion of the seal case can be fastened to the mounting base plate by only one screw, so that the disassembly process can be completed only by screwing one screw, and the operation is very simple.

Further, in the air pump assembly of the present invention, the air pump is connected to the external air inlet pipe and the external air outlet pipe through the air inlet pipe joint and the air outlet pipe joint embedded in the casing, so that the air pump can be conveniently taken out from the casing.

In addition, the refrigerating and freezing device of the present invention has a gas regulating membrane module and an air pump, and the air pump can make the pressure on one side of the air conditioning membrane smaller than the other side, so that nitrogen-rich oxygen is formed in the atmosphere of the modified atmosphere to facilitate food. The fresh gas atmosphere reduces the oxygen content of the fruit and vegetable storage space, reduces the aerobic respiration of fruits and vegetables, ensures the basic respiration, and prevents the anaerobic respiration of fruits and vegetables, thereby achieving the long-term preservation of fruits and vegetables.

Further, in the refrigerating and freezing device of the present invention, the air pump is disposed in the compressor chamber without additionally occupying other space, particularly the storage space, so that the extra volume of the refrigerating and freezing device is not increased, and the structure of the refrigerating and freezing device can be compact.

Further, the refrigerating and freezing apparatus of the present invention not only has a good fresh-keeping effect, but also has low rigidity and strength requirements for a storage container or the like, and has low requirements, and the cost is also low. Moreover, the above technical problems that the technicians in the field of modified atmosphere preservation have been eager to solve but have not been successfully solved have been solved. Refrigerated and refrigerated units are not only small in size but also low in noise, making them especially suitable for home and personal use.

The above as well as other objects, advantages and features of the present invention will become apparent to those skilled in the <

DRAWINGS

Some specific embodiments of the present invention are described in detail below by way of example, and not limitation. The same reference numbers in the drawings identify the same or similar parts. Those skilled in the art should understand that the drawings are not necessarily drawn to scale. In the figure:

1 is a schematic structural view of an air pump assembly according to an embodiment of the present invention;

Figure 2 is an exploded perspective view of the air pump assembly of Figure 1 after the sealing case is detached from the mounting base;

Figure 3 is an exploded perspective view of the air pump assembly of Figure 1;

Figure 4 is a schematic view showing the cooperation structure of the air pump and the casing;

Figure 5 is a schematic partial structural view of a refrigerating and freezing apparatus according to an embodiment of the present invention;

Figure 6 is a schematic structural view of another perspective of the structure shown in Figure 5;

Figure 7 is a schematic partial structural view of a refrigerating and freezing apparatus according to an embodiment of the present invention;

Figure 8 is a schematic exploded view of the structure shown in Figure 7;

9 is an exploded view of a gas regulating membrane module in a refrigerating and freezing apparatus according to an embodiment of the present invention.

detailed description

1 is a schematic structural view of an air pump assembly according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the air pump assembly of FIG. 1 after the seal box is detached from the mounting base plate, and FIG. 3 is an air pump shown in FIG. A schematic diagram of the decomposition of the components. As shown in FIG. 1 to FIG. 3, the present invention provides an air pump assembly 10 which can be applied to a refrigerating and freezing device such as a refrigerator. It is used to extract oxygen from a confined space to create a nitrogen-rich and oxygen-poor atmosphere.

The air pump assembly 10 can generally include a mounting base 100, a sealed box 200, and an air pump 300. Among them, the air pump 300 is disposed inside the sealed box 200. When the air pump 300 is in operation, the sealed box 200 can largely block the noise from propagating outward. The mounting base plate 100 is for supporting the seal case 200 upward, and the rear surface of the upper surface has an upwardly extending stopper portion 110. The front surface of the stopper 110 is recessed rearward to form a positioning recess 112. The rear portion of the seal case 200 has a positioning projection 212 that projects rearward. The sealing box 200 is located on the upper side of the mounting base 100, the positioning protrusion 212 is engaged with the positioning recess 112, and the front portion of the sealing box 200 is locked to the mounting base 100, so that the tightness between the sealing box 200 and the mounting base 100 can be achieved. solid.

Specifically, when the air pump assembly 10 is installed, the mounting base 100 is first fixed to the refrigerating and freezing device, and the sealed box 200 containing the air pump 300 is placed on the mounting base 100, and the sealing box 200 is pushed backward to make the positioning protrusion. The portion 212 is snapped into the positioning recess 112, and finally the front portion of the sealed casing 200 is locked with the mounting base 100. When the air pump assembly 10 is disassembled, it is only necessary to unlock the front portion of the seal case 200 from the mounting base 100 to pull the seal case 200 forward without disassembling the mounting base plate 100. It can be seen from the above that the disassembly and assembly process of the air pump assembly 10 of the embodiment of the present invention is very convenient.

In some embodiments, as shown in FIG. 3, in order to improve the vibration and noise reduction effect, a plurality of vibration-damping pads 400 (which may be made of rubber) may be mounted on the mounting base plate 100. The number of the vibration-damping foot pads 400 is preferably four, and the four vibration-damping foot pads 400 are mounted in the foot pad mounting holes 120 opened at the four corners of the mounting base plate 100.

Additionally, in some embodiments, the sealed enclosure 200 is preferably locked to the mounting base 100 by screws. As shown in FIG. 3, the front portion of the sealing case 200 is provided with an ear plate 214. The ear plate 214 is provided with a screw hole, and the mounting base plate 100 is provided with a threaded hole 130 opposite to the screw hole. The screw 215 is screwed onto the threaded hole 130 through the screw hole.

In some embodiments, as shown in FIGS. 2 and 3, the mounting base 100 may be a sheet metal member, and the aforementioned stop portion 110 is an upward flange formed from the mounting base plate 100 to simplify the manufacturing process. The aforementioned positioning recess 112 may be a through hole formed in the flange. The through hole may be a polygonal through hole, and the positioning convex portion 212 is a polygonal structure matching the shape of the polygonal through hole. As shown, the through hole and the positioning convex portion 212 are both triangular structures, so as to be able to constrain the sealed box more comprehensively. The degree of freedom of 200 makes the sealed box 200 more stable.

Of course, the stopping portion 110 can also be a separately formed component fixed on the mounting base plate 100, and the positioning recessed portion 112 can also be a circular or any other shape of the through hole, and can also be a blind hole.

In some embodiments, the sealed enclosure 200 is assembled from a plurality of sections. As shown in FIGS. 1 to 3, the sealed casing 200 includes a casing 210 and an upper cover 220. Wherein, the casing 210 defines an accommodation space having an upper side opening for accommodating the air pump 300. The upper cover 220 is configured to seal the upper side opening of the cover case 210. An O-ring 230 may be disposed between the upper cover 220 and the casing 210 to achieve sealing, and both may be screwed.

4 is a schematic view showing the cooperation structure of the air pump and the casing. As shown in FIGS. 3 and 4, the front wall of the seal case 200 (preferably the front wall of the case 210) may be fitted with an intake pipe joint 510 and an air outlet pipe joint 520 that communicate with the inner and outer spaces of the seal case 200. The inner and outer ends of the intake pipe joint 510 are respectively connected to the intake pipe 310 of the air pump 300 and the external intake pipe 710 located outside the sealed box 200. The inner and outer ends of the air outlet pipe joint 520 are respectively connected to the air outlet pipe 320 of the air pump 300 and the external air outlet pipe 720 located outside the sealed casing 200. This facilitates the connection of the pipeline and the disassembly and assembly of the air pump 300. Of course, the intake pipe joint 510 and the air outlet pipe joint 520 may also be disposed on the upper cover 220.

Preferably, the intake pipe joint 510 and the air outlet pipe joint 520 are pagoda joints, and the pipes can be assembled by hand only, and the disassembly is also very convenient. The specific structure of the pagoda joint is well known to those skilled in the art. This will not be repeated here.

In some embodiments, as shown in FIG. 4, the casing 210 is internally provided with a mounting frame 240. The mounting frame 240 is connected to the inner wall of the sealing box 200 through a plurality of damping blocks, and the air pump 300 is fixed inside the mounting frame 240. . This is to reduce the vibration and noise of the air pump 300 during operation.

Specifically, the bottom of the mounting frame 240 is provided with two intermediate openings of the vibration damping pad 217, and the damping pad 217 is sleeved on the positioning post 215 of the bottom wall of the casing 210. A circular damping pad 219 is disposed on each of the front and rear sides of the mounting frame 240, and is inserted into the front and rear latching slots 216 inside the casing 210. A damping pad 218 is fixed to each of the lateral sides of the mounting frame 240. The air pump 300 is between the

vibration damping pads

217, 218, 219 and is fastened to the mounting frame 240 by screws. As such, the vibration of the air pump 300 during operation will be transmitted to the

vibration damping blocks

217, 218, 219 through the mounting frame 240 to be buffered for vibration damping purposes.

Another aspect of the present invention provides a refrigerating and freezing apparatus. Figure 5 is a schematic partial structural view of a refrigerating and freezing apparatus according to an embodiment of the present invention; Figure 6 is a schematic structural view of another view of the structure shown in Figure 5; Figure 7 is a refrigerating and freezing according to an embodiment of the present invention. A schematic partial structural view of the apparatus; Fig. 8 is a schematic exploded view of the structure shown in Fig. 7; and Fig. 9 is an exploded view of the gas regulating membrane module in the refrigerating and freezing apparatus according to an embodiment of the present invention. As shown in FIGS. 5 to 9, the refrigerating and freezing apparatus according to the embodiment of the present invention may include a casing 80, a door body, a gas regulating membrane module 30, the aforementioned air pumping unit 10, and a refrigeration system.

A storage space 201 and a compressor compartment 13 are defined in the casing 80. The door body is used to open or close the storage space 201. Further, a storage container is disposed in the storage space 201, and the storage container has a modified atmosphere. The atmosphere fresh-keeping space can be a closed space or an approximately closed space. Preferably, the storage container is a drawer assembly. The storage container can include a drawer body 20 and a drawer body 28. The drawer cylinder 20 may have a forward opening and is disposed in the storage space 201, and may be specifically disposed at a lower portion of the storage space 201. As can be appreciated by those skilled in the art, the drawer body 20 can also be disposed in the middle or upper portion of the storage space 201. The drawer body 28 is slidably disposed within the drawer body 20 to operatively withdraw and inwardly insert the drawer body 20 from the forward opening of the drawer body 20. The drawer body 28 can have a drawer end cover, and the drawer end cover can be pumped The opening of the drawer body 20 is matched to seal the atmosphere of the atmosphere. In some alternative embodiments, the storage container can include a barrel and a small door configured to open or close the barrel.

The refrigeration system may be a refrigeration cycle system composed of a compressor, a condenser, a throttle device, and an evaporator. The compressor can be installed in the compressor compartment 13. The evaporator is configured to provide cooling directly or indirectly into the storage space 201. For example, when the refrigerating and freezing device is a domestic compression type direct cooling refrigerator, the evaporator may be disposed inside the casing 80. When the refrigerating and freezing device is a domestic compression air-cooled refrigerator, the casing 80 further has an evaporator chamber therein, and the evaporator chamber communicates with the storage space 201 through the air passage system, and an evaporator is arranged in the evaporator chamber, and the outlet is provided with The fan is circulated and cooled to the storage space 201.

The gas regulating membrane module 30 has at least one gas regulating membrane 31 and an oxygen-rich gas collecting chamber, and the surrounding space thereof communicates with the modified atmosphere. The gas-regulating membrane module 30 can be configured such that oxygen in the space airflow around the gas-regulating membrane module 30 passes through the gas-regulating membrane 31 more into the oxygen-rich gas collection chamber relative to the nitrogen in the space airflow around the gas-regulating membrane module 30. Specifically, the inner side surface of each of the air-conditioning membranes 31 faces the oxygen-rich gas collecting chamber to make the outer space of the air-conditioning membrane module 30 when the pressure of the oxygen-rich gas collecting chamber is lower than the pressure of the surrounding space of the air-conditioning membrane module 30. The oxygen in the air passes through at least one of the gas regulating membranes 31 into the oxygen-rich gas collecting chamber with respect to the nitrogen gas therein.

The air pump assembly 10 can be disposed in the compressor housing 13 and the mounting base 100 is mounted to the bottom wall of the compressor housing 13 via the vibration damping foot pad 400. The intake end of the air pump 300 is in communication with the oxygen-enriched gas collection chamber of the gas regulating membrane module 30 via a line 50 to evacuate gas that has penetrated into the oxygen-rich gas collection chamber to the outside of the storage container.

In this embodiment, the air pump 300 is pumped outward to make the pressure of the oxygen-rich gas collecting chamber smaller than the pressure of the surrounding space of the air-conditioning membrane module 30, and further, the oxygen in the space around the air-conditioning membrane module 30 can be made. Enter the oxygen-rich gas collection chamber. Since the air-conditioning space is connected to the space around the air-conditioning membrane module 30, the air in the air-conditioning space enters the space around the air-conditioning membrane module 30, so that oxygen in the air in the atmosphere can be made to enter the oxygen-rich gas. The chamber is collected to obtain a gas atmosphere rich in nitrogen and oxygen in the atmosphere of the modified atmosphere to facilitate food preservation.

The refrigerating and freezing device of the invention can form a gas atmosphere rich in nitrogen and oxygen in the atmosphere of the fresh air conditioning to promote food preservation, and the gas atmosphere reduces the oxygen content of the fruit and vegetable storage space, thereby reducing the aerobic respiration intensity of the fruits and vegetables, and ensuring the foundation. The respiration function prevents the fruits and vegetables from undergoing anaerobic respiration, thereby achieving the purpose of long-term preservation of fruits and vegetables. Moreover, the gas atmosphere also has a large amount of gas such as nitrogen gas, and does not reduce the cooling efficiency of articles in the atmosphere of the modified atmosphere, so that fruits and vegetables can be effectively stored. The air pump 300 is disposed in the compressor compartment 13 and can fully utilize the space of the compressor compartment 13 without occupying other places, so that the extra volume of the refrigerating and freezing apparatus is not increased, and the structure of the refrigerating and freezing apparatus can be made compact. Moreover, the rigidity and strength of the casing 80 and the like are low, and the implementation requirements are low, and the cost is also low. The refrigerating and freezing device of the present invention well solves the above technical problems that the technicians in the field of modified atmosphere preservation have been eager to solve but have not been successfully solved. this invention The chiller and freezer are not only small in size but also low in noise, making them especially suitable for home and personal use.

In some embodiments of the present invention, the drawer body 20 may be provided with a plurality of micropores, and the storage space 201 and the modified atmosphere are connected via a plurality of micropores. The micropores may also be referred to as gas pressure balance pores, and each micropore may be micropores of the order of millimeters, for example, each micropore has a diameter of 0.1 mm to 3 mm, preferably 1 mm, 1.5 mm, or the like. The provision of a plurality of micropores allows the pressure in the atmosphere of the modified atmosphere to be not too low, and the arrangement of the plurality of micropores does not cause the nitrogen in the atmosphere of the modified atmosphere to flow to the large storage space 201, even if the flow is small. Even negligible, it will not affect the preservation of food in the atmosphere. In some optional embodiments of the present invention, the drawer cylinder 20 may not be provided with micropores. Even in this case, a large amount of gas such as nitrogen gas is present in the atmosphere of the modified atmosphere, and the user does not need to open the drawer body 28 when the drawer body 28 is opened. Too much effort, compared to the existing vacuum storage room, it will save a lot of effort.

In some embodiments of the invention, the storage space 201 is a refrigerated space having a storage temperature generally between 2 ° C and 10 ° C, preferably between 3 ° C and 8 ° C. Further, the box 80 may further define a freezing space 12 and a temperature changing space 27. The freezing space 12 is disposed below the storage space 201, and the temperature changing space 27 is disposed between the freezing space 12 and the refrigerating space. The temperature within the freezing space 12 is typically in the range of -14 ° C to -22 ° C. The variable temperature space 27 can be adjusted as needed to store the appropriate food. The compressor compartment 24 is preferably disposed behind the lower portion of the freezing space 12. In some alternative embodiments of the present invention, the storage space 201 may also be a freezing space or a temperature changing space, that is, the temperature range of the storage space 201 may be controlled at -14 ° C to -22 ° C or adjusted according to requirements. .

In some embodiments of the present invention, as shown in FIGS. 7 and 8, the air conditioning membrane module 30 may be disposed on the barrel wall of the drawer body 20. The air conditioning membrane module 30 can be in the form of a flat plate and can be preferably and horizontally disposed on the top wall of the drawer body 20. Specifically, a receiving chamber 22 is disposed in the top wall of the drawer cylinder 20 to accommodate the air conditioning membrane module 30. For example, at least one first vent hole 23 and a second vent hole 24 are formed in a wall surface between the accommodating cavity of the top wall of the drawer cylinder 20 and the atmosphere fresh-keeping space. The at least one first venting opening 23 is spaced apart from the at least one second venting opening 24 to respectively communicate the receiving chamber and the modified atmosphere at different positions. The first vent hole 23 and the second vent hole 24 are both small holes, and the number may be plural. In some alternative embodiments, the inside of the top wall of the drawer body 20 has a recessed groove. The air conditioning membrane module 30 is disposed in a recessed groove of the top wall of the drawer body 20.

Line 50 can include a vertical tube section. The vertical pipe section is disposed at the rear of the storage space 201, and the lower end of the vertical pipe section communicates with the inlet of the air pump 300, and the upper side of the vertical pipe section communicates with the oxygen-rich gas collection chamber of the gas regulating membrane module 30. The vertical pipe section can be disposed adjacent to the side shell and the backboard of the box body 80, and the vertical pipe section can be provided with a heat insulating sleeve or a heat insulating tube to prevent the cold amount of oxygen in the vertical pipe section from being transmitted to the side shell and the backboard, thereby preventing Produces condensation.

In some embodiments of the present invention, in order to promote the flow of the atmosphere in the atmosphere and the gas in the accommodating chamber 22, the chilling and freezing device may further include a fan 60, and the fan 60 may be disposed in the accommodating chamber and configured to promote the atmosphere of the conditioned space. Gas via The first vent hole 23 enters the accommodating chamber 22, and the gas in the accommodating chamber 22 enters the conditioned space through the second vent hole 24. That is to say, the fan 60 can cause the gas of the modified atmosphere to be returned to the modified atmosphere through the at least one first vent 23, the accommodating cavity and the at least one second vent 24 in sequence.

The fan 60 is preferably a centrifugal fan disposed at the first venting opening 23 in the accommodating chamber 22. That is, the centrifugal fan is located above the at least one first venting opening 23, and the axis of rotation is vertically downward, and the air inlet is directed to the first venting opening 23. The air outlet of the centrifugal fan can face the air conditioning membrane module 30. The air conditioning membrane module 30 is disposed above the at least one second venting opening 24 such that each of the air conditioning membranes of the air conditioning membrane module 30 is parallel to the top wall of the drawer cylinder 20. At least one first venting opening 23 is provided at the front of the top wall, and at least one second venting opening 24 is provided at the rear of the top wall. That is, the centrifugal fan is disposed at the front of the accommodating chamber 22, and the air conditioned membrane module 30 is disposed at the rear of the accommodating chamber 22. Further, the top wall of the drawer body 20 includes a main plate portion 25 and a cover portion 26, and a partial portion of the main plate portion 25 is formed with a recess portion, and the cover portion 26 is detachably covered on the recess portion to form a receiving portion. Cavity 22. In order to facilitate the manufacture of the drawer cylinder 20, the main plate portion 25 may be integrally formed with the side wall, the bottom wall, and the rear wall of the drawer body 20.

In some embodiments of the present invention, as shown in FIG. 9, the air conditioning membrane module 30 can be in the form of a flat plate, and the air conditioning membrane module 30 can further include a support frame 32. The air-conditioning membranes 31 may be two, mounted on both sides of the support frame 32 such that the two air-conditioning membranes 31 and the support frame 32 together enclose an oxygen-rich gas collection chamber.

Further, the support frame 32 may include a frame, a rib plate and/or a flat plate disposed in the frame, and an air flow passage between the ribs, between the ribs and the flat plate, the surface of the rib plate, and the surface of the flat plate. Grooves may be formed in the upper portion to form an air flow passage. The ribs and/or the flat plate may increase the structural strength and the like of the air-conditioning membrane module 30. That is, the support frame 32 has first and second surfaces parallel to each other, and the support frame 32 is formed to extend on the first surface, extend on the second surface, and penetrate the support frame 32 to communicate with the first a plurality of gas flow channels of the surface and the second surface, the plurality of gas flow channels together form an oxygen-rich gas collecting chamber; at least one gas regulating film 31 is two planar gas regulating films respectively laid on the first surface of the support frame 32 and On the surface.

In some embodiments of the invention, the support frame 32 includes a venting aperture 33 in communication with the aforementioned at least one airflow passageway disposed on the rim to allow oxygen in the oxygen-rich gas collection chamber to be output. The air suction hole 33 is in communication with the air pump 300. The air vent 33 may be disposed on the long edge of the frame or on the short edge of the frame to be determined according to the orientation of the air conditioning film assembly 30 or actual design requirements, for example, the implementation shown in FIGS. 7 and 8. In the example, the air vent 33 can be placed on the long edge of the frame. The air-conditioning film 31 is first attached to the frame by the double-sided tape 34, and then sealed by the sealant 35.

In some embodiments, the support frame 32 can include a bezel, a plurality of first ribs, and a plurality of second ribs. The plurality of first ribs are longitudinally spaced apart inside the frame and extend in the lateral direction, and one side surface of the plurality of first ribs forms a first surface. a plurality of second ribs are laterally spaced apart from each other on the other side surface of the plurality of first ribs and extend in the longitudinal direction, And a side surface of the plurality of second ribs away from the first rib forms a second surface. The support frame 32 of the present invention is provided with a plurality of first ribs extending in the longitudinal direction and extending in the lateral direction inside the frame and a plurality of sections extending laterally and longitudinally on one side surface of the plurality of first ribs The two ribs thus ensure the continuity of the air flow passage on the one hand, and greatly reduce the volume of the support frame 32 on the other hand, and greatly enhance the strength of the support frame 32. In addition, the above structure of the support frame 32 ensures that the air-conditioning membrane 31 can obtain sufficient support, and can maintain a good flatness even when the negative pressure inside the oxygen-rich gas collection chamber is large, and the gas-regulating film is ensured. The service life of 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. Wherein a plurality of first wide ribs are spaced apart, and a plurality of first narrow ribs are disposed between the adjacent two first wide ribs. The plurality of second ribs may include: a plurality of second narrow ribs and a plurality of second wide ribs, wherein the plurality of second wide ribs are spaced apart, and a plurality of the second wide ribs are disposed between the two adjacent Second narrow rib. Those skilled in the art will readily appreciate that "wide" and "narrow" herein are relative.

In some embodiments, each of the first wide ribs is recessed inwardly from a side surface thereof on which the first surface is formed to form a first groove; a side surface from which the second wide rib is formed to form the second surface The second groove is recessed inwardly to improve the connectivity of the internal mesh structure while ensuring that the thickness of the support frame 32 is small (or small).

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 the portion of the surface that is flush with the second surface is inward The recess forms a third trench; the third trench communicates with a portion where the second trench intersects to form a cross trench. a portion of the surface of the at least one second wide rib of the plurality of second wide ribs facing away from the second surface extends toward the first rib to be flush with the first surface, and the portion of the surface that is flush with the first surface Forming a fourth trench inwardly; wherein the fourth trench communicates with a portion where the first trench intersects to form a cross trench. In some embodiments of the present invention, in order to facilitate the flow of airflow, as shown in FIG. 8, the inner surface of the cover portion 26 may extend downwardly from the plurality of air guiding ribs to guide the airflow from the fan 60 in the receiving chamber. The inner surface of each of the air-conditioning membranes 31 of the gas-regulating membrane module 30 is separated from the outer surface of the oxygen-rich gas collecting chamber. The plurality of air guiding ribs may be divided into two groups, and the second group of air guiding ribs are symmetrically disposed with respect to one plane of the first group of air guiding ribs and the first group of air guiding ribs. Each set of air guiding ribs includes a first air guiding rib, at least one second air guiding rib, and at least one third air guiding rib. The first air guiding rib extends from a side of the air outlet of the centrifugal fan to a side of the receiving cavity and extends to a laterally outer side of the air conditioning film assembly 30. Each of the second air guiding ribs is disposed between the two first air guiding ribs and between the air conditioning film assembly 30 and the centrifugal fan. Each of the third air guiding ribs is located on a lateral outer side of the air conditioning membrane module 30 to direct airflow from the lateral sides of the air conditioning membrane module 30 into the air conditioning membrane module 30 and the bottom or top surface of the receiving chamber. The gap between them.

In this regard, it will be appreciated by those skilled in the <RTIgt;the</RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; Content directly determined or Many other variations or modifications consistent with the principles of the invention are derived. Therefore, the scope of the invention should be understood and construed as covering all such other modifications or modifications.

Claims

An air pump assembly characterized by comprising:

Mounting the bottom plate, the rear surface of the upper surface has an upwardly extending stop portion, and the front surface of the stop portion is recessed rearward to form a positioning recess;

a sealing box having a positioning protrusion protruding rearward, the sealing box being located on an upper side of the mounting bottom plate, the positioning protrusion being engaged in the positioning recess, the front of the sealing box Locked to the mounting base; and

An air pump is disposed inside the sealed box.
The air pump assembly of claim 1 wherein:

The mounting bottom plate is a sheet metal member, and the stopping portion is an upward flange formed by the mounting bottom plate.
The air pump assembly according to claim 2, wherein

The positioning recess is a through hole formed in the flange.
The air pump assembly of claim 1 wherein:

The front portion of the seal case is provided with a screw hole opposite to a screw hole opened on the mounting base plate to lock the seal case to the mounting base plate with a screw.
The air pump assembly of claim 1 wherein said sealed casing comprises:

a casing defining an accommodation space having an upper side opening to accommodate the air pump; and

An upper cover configured to seal the upper opening of the cover.
The pump assembly of claim 5, further comprising:

a mounting frame disposed inside the casing and disposed with a plurality of vibration damping blocks between the inner wall of the casing;

The air pump is fixed in the mounting frame.
The air pump assembly according to claim 5, wherein

The front wall of the sealing box is embedded with an air inlet pipe joint and an air outlet pipe joint that communicate with the inner and outer spaces of the sealing box;

The inner and outer ends of the intake pipe joint are respectively connected to an intake pipe of the air pump and an external air inlet pipe outside the sealed box;

The inner and outer ends of the air outlet pipe joint are respectively connected to an air outlet pipe of the air pump and an external air outlet pipe outside the sealed box.
The air pump assembly of claim 1 wherein:

A plurality of vibration damping pads are mounted on the mounting base plate.
A refrigerating and freezing device characterized by comprising:

a tank body defining a storage space and a compressor compartment therein, wherein the storage space is provided with a storage container, wherein the storage container has a modified atmosphere;

a gas regulating membrane module having at least one gas regulating membrane and an oxygen-rich gas collecting chamber, and a surrounding space thereof is in communication with the modified atmosphere, the gas regulating membrane module being configured such that a space around the gas regulating membrane module The oxygen in the gas stream enters the oxygen-rich gas collection chamber through the gas-regulating membrane more than the nitrogen in the space airflow around the gas-conditioning membrane module;

The air pump assembly according to any one of claims 1 to 8, which is disposed in the compressor chamber, the intake end of the air pump and the oxygen-rich oxygen of the gas regulating membrane module via a pipeline The body collection chamber is in communication to draw gas that has penetrated into the oxygen-rich gas collection chamber out of the storage container.
The refrigerating and freezing apparatus according to claim 9, wherein

The gas regulating film assembly further includes a support frame having first and second surfaces parallel to each other, and the support frame is formed to extend on the first surface and extend on the second surface, respectively And a plurality of gas flow passages penetrating the support frame to communicate the first surface and the second surface, the plurality of gas flow channels collectively forming the oxygen-rich gas collection chamber;

The at least one air-conditioning membrane is two planar air-conditioning membranes respectively laid on the first surface and the second surface of the support frame.