CN106593818A - Gas suction pump assembly and cold storage and freezing device - Google Patents

Abstract

The invention relates to an air suction pump assembly and a refrigerating and freezing device, wherein the air suction pump assembly includes: a sealed box, which includes a box body with an upper opening and an upper cover for covering the upper opening, and the upper edge of the side wall of the box body Two semicircular notches are respectively opened on the lower edge of the side wall of the upper cover. When the upper cover is installed on the box body, the two semicircular notches of the box body are respectively opposite to the two semicircular notches of the upper cover. , to form two pipeline outlet holes; and an air suction pump, which is arranged inside the sealed box and its air inlet pipe and air outlet pipe are respectively led to the outside of the sealed box through one pipeline outlet hole. The air pump assembly of the present invention has low operating noise and is very convenient to disassemble in the refrigerating and freezing device, and it is convenient to lead the air inlet pipe and the air outlet pipe of the air pump to the outside of the sealed box.

Description

Aspirator assembly and refrigeration freezer

technical field

The invention relates to the technical field of refrigerator storage, in particular to an air suction 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 in refrigeration and freezing devices such as refrigerators and freezers. Modified atmosphere preservation technology generally refers to the technology of prolonging the life of food storage 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 (for example, ozone, nitrogen monoxide, nitrogen dioxide, water vapor, etc. In the field of controlled atmosphere preservation, it is usually used to fill the closed space with nitrogen-enriched gas. The mode that reduces oxygen content obtains the fresh-keeping gas atmosphere of rich nitrogen and poor oxygen.Here, those skilled in the art all know that nitrogen-rich gas refers to the gas that nitrogen content surpasses the nitrogen content in the above-mentioned normal air, for example wherein nitrogen content can be 95 %～99%, or even higher; and the nitrogen-rich and oxygen-deficient fresh-keeping gas atmosphere refers to the gas atmosphere in which the nitrogen content exceeds the nitrogen content in the above-mentioned normal air, and the oxygen content is lower than the oxygen content in the above-mentioned normal air.

The history of controlled atmosphere preservation technology can be traced back to 1821, when German biologists discovered that fruits and vegetables can reduce metabolism at low oxygen levels. But until now, due to the large size and high cost of nitrogen-generating equipment traditionally used for controlled atmosphere preservation, this technology has basically been limited to use in various large-scale professional storages (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.

In addition, the modified atmosphere fresh-keeping technology requires the use of an air pump to extract oxygen, but the operation noise of the air pump is relatively large. Therefore, if this technology is applied to a refrigerator, how to reduce the noise of the air pump is also an urgent problem to be solved.

Contents of the invention

An object of the present invention is to overcome at least one disadvantage of the prior art, to provide an air pump assembly which operates with less noise and is very convenient for assembly and disassembly.

A further object of the present invention is to facilitate the leading out of the air inlet pipe and air outlet pipe of the air pump to the outside of the sealed box.

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

In one aspect, the present invention provides an air pump assembly comprising:

A sealed box, which includes a box body with an upper opening and an upper cover for covering the upper opening. Two semicircular notches are respectively opened on the upper edge of the side wall of the box body and the lower edge of the side wall of the upper cover. When the upper cover is installed on the box body, the two semicircular notches of the box body are respectively opposed to the two semicircular notches of the upper cover to form two pipeline outlet holes; and

The air suction pump is arranged inside the sealed box, and its air inlet pipe and air outlet pipe are led out of the sealed box through a pipeline outlet hole respectively.

Optionally, a cable lead-out notch is provided on the upper edge of the side wall of the box body for leading the cable of the air pump to the outside of the sealed box.

Optionally, the air pump assembly also includes a mounting base plate, the rear portion of the upper surface has an upwardly extending stopper, and the front surface of the stopper portion is recessed backward to form a positioning depression; and the sealing box is located on the upper side of the mounting baseplate, And the rear part has a positioning protrusion protruding backward, the positioning protrusion snaps into the positioning depression, and the front part of the sealing box is locked on the installation base plate.

Optionally, the installation base plate is a sheet metal part, the stopper is an upward flange formed by the installation base plate; and the positioning recess is a through hole opened on the flange.

Optionally, a screw hole is provided at the front of the sealing box, and the screw hole is opposite to the threaded hole opened on the installation base plate, so as to lock the sealing box to the installation base plate with screws.

Optionally, multiple shock-absorbing foot pads are installed on the installation base.

Optionally, the air pump assembly further includes an installation frame, which is arranged inside the box body and a plurality of vibration-damping pads are arranged between the inner wall of the box body; and the air pump is fixed in the installation frame.

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

The box body defines a storage space and a compressor compartment inside, a storage container is arranged in the storage space, and a modified atmosphere fresh-keeping space is provided in the storage container;

The modified atmosphere membrane module has at least one modified atmosphere membrane and an oxygen-enriched gas collection chamber, and its surrounding space communicates with the controlled atmosphere fresh-keeping space, and the modified atmosphere membrane module is configured so that the oxygen in the airflow in the surrounding space of the modified atmosphere membrane module is relatively The nitrogen in the gas flow in the space around the air-conditioning membrane module is more permeated through the air-conditioning membrane and enters the oxygen-enriched gas collection chamber; and

According to the air extraction pump assembly according to any one of the above, it is arranged in the compressor compartment, and the air intake end of the air extraction pump communicates with the oxygen-enriched gas collection chamber of the atmosphere-modulating membrane module through a pipeline, so as to penetrate into the oxygen-enriched gas collection chamber The gas is pumped out of the storage container.

Optionally, the storage container is a drawer assembly, which includes a drawer cylinder and a drawer body slidably installed in the drawer cylinder; the top wall of the drawer cylinder is provided with an accommodating cavity communicating with the modified atmosphere fresh-keeping space to accommodate Air-modified membrane assembly; at least one first ventilation hole and at least one second ventilation hole spaced apart from at least one first ventilation hole are opened in the wall surface between the accommodating cavity of the top wall of the drawer cylinder and the controlled atmosphere fresh-keeping space. The air holes are used to communicate with the storage cavity and the modified atmosphere fresh-keeping space at different positions; and at least one second ventilation hole to return to the controlled atmosphere fresh-keeping space.

Optionally, the air-conditioning 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 jointly form an oxygen-enriched gas collection chamber; on one surface and the second surface.

In the air suction pump assembly of the present invention, the air suction pump is arranged inside the sealing box, and the sealing box can prevent the noise of the air suction pump from spreading outward during operation. Moreover, the present invention can conveniently lead out the air intake pipe and the air outlet pipe of the air pump to the outside of the sealed box by providing a pipeline lead-out hole at the joint between the box body and the upper cover. During the installation process, directly put the air inlet pipe and the air outlet pipe on the semicircular gap of the box body, and then cover the upper cover. During the disassembly process, after the upper cover is disassembled, the air inlet pipe and the air outlet pipe can be taken out upwards, and the operation is very convenient.

Further, when the air pump assembly of the present invention is in use, the installation base plate can be fixed in the refrigerator and freezer first, and then the sealing box can be installed on the installation base plate. When the air pump assembly needs to be replaced or repaired, only the sealing box can be removed No need to disassemble the mounting base plate. During the installation process, the positioning protrusion at the rear of the sealing box is snapped into the positioning depression on the installation base, and then the front of the seal box is detachably connected to the installation base. This not only realizes the stable installation of the sealing box relative to the installation base plate, but also only needs to operate the front part of the sealing box when disassembling, which is very convenient.

Furthermore, in the air pump assembly of the present invention, the front part of the sealing box can be fastened to the installation base plate by only one screw, and only one screw is needed to complete the disassembly process, and the operation is very simple.

In addition, because the refrigerating and freezing device of the present invention has a modified atmosphere membrane module and an air suction pump, the air suction pump can make the pressure on one side of the modified atmosphere membrane smaller than that on the other side, so that nitrogen-rich and oxygen-poor oxygen can be formed in the controlled-atmosphere fresh-keeping space to benefit food. Fresh-keeping gas atmosphere, the gas atmosphere reduces the oxygen content in the fruit and vegetable storage space, reduces the intensity of aerobic respiration of fruits and vegetables, and at the same time ensures the basic respiration and prevents anaerobic respiration of fruits and vegetables, so as to achieve the purpose of long-term freshness of fruits and vegetables.

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

Furthermore, the refrigerating and freezing device of the present invention 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, it solves the above-mentioned technical problems that technicians in the field of modified atmosphere preservation have been eager to solve but have not been able to solve successfully. The refrigerating and freezing device is not only small in size, but also low in noise, which is especially suitable for home and personal use.

Those skilled in the art will be more aware of the above and other objects, advantages and features of the present invention according to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings.

Description of drawings

Hereinafter, some specific embodiments of the present invention will be described in detail by way of illustration and not limitation 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:

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

Figure 2 is a schematic front view of the aspirator assembly shown in Figure 1;

Fig. 3 is an exploded schematic view of the air pump assembly shown in Fig. 1 after the sealing box is disassembled from the mounting base;

Fig. 4 is an exploded schematic view of the air pump assembly shown in Fig. 1;

Fig. 5 is a schematic diagram of the cooperative structure of the air pump and the box body;

Fig. 6 is a schematic partial structural view of a refrigerating and freezing device according to an embodiment of the present invention;

Fig. 7 is a schematic structural diagram of another viewing angle of the structure shown in Fig. 6;

Fig. 8 is a schematic partial structural view of a refrigerator-freezer according to an embodiment of the present invention;

Fig. 9 is a schematic exploded view of the structure shown in Fig. 8;

Fig. 10 is an exploded view of an air-conditioning membrane assembly in a refrigerating and freezing device according to an embodiment of the present invention.

detailed description

Fig. 1 is a schematic structural view of an air pump assembly according to an embodiment of the present invention, and Fig. 2 is a schematic front view of the air pump assembly shown in Fig. 1; Fig. 3 is a schematic view of the air pump assembly shown in Fig. The disassembled schematic diagram; Figure 4 is an exploded schematic diagram of the air pump assembly shown in Figure 1. As shown in Figures 1 to 4, the present invention provides an air pump assembly 10, which can be used in refrigerators and other refrigerating and freezing devices to extract oxygen from the storage space to create a nitrogen-rich and oxygen-poor fresh-keeping gas atmosphere.

The aspirator assembly 10 may generally include a sealed box 200 and an aspirator 300 . Wherein, the sealed box 200 includes a box body 210 with an upper opening and an upper cover 220 for covering the upper opening, the box body 210 and the upper cover 220 jointly define the accommodation space of the air pump 300, and there is An O-ring 230 can be used for sealing. Two semicircular notches 211 are formed on the upper edge of the side wall of the box body 210 , and two semicircular notches 221 are formed on the lower edge of the side wall of the upper cover 220 . When the upper cover 220 is installed on the box body 210, the two semicircular notches 211 of the box body 210 are respectively opposed to the two semicircular notches 221 of the upper cover 220 to form two pipeline outlet holes 204, 202 , as shown in Figure 2. The suction pump 300 is disposed inside the sealed box 200 and its air intake pipe 310 and air outlet pipe 320 are led out of the sealed box 200 through the pipeline outlet hole 204 and the pipeline outlet hole 202 respectively.

In this way, when the suction pump 300 is running, the sealing box 200 can largely block the noise from spreading outward. Moreover, during the installation process, the air inlet pipe 310 and the air outlet pipe 320 can be directly placed in the semicircular notch 211 and the semicircular notch 221 of the box body 210 respectively, and then the upper cover 220 can be covered. During the disassembly process, after the upper cover 220 is disassembled, the air inlet pipe 310 and the air outlet pipe 320 can be taken out upwards, which is very convenient to operate.

In addition, as shown in FIGS. 2 and 4 , a cable lead-out notch 203 is provided on the upper edge of the side wall of the box body 210 for leading the cable 330 (for power supply or communication) of the air pump 300 to the sealed box 200. of the exterior. In order to achieve sealing, a sealing block made of rubber or sponge can be provided at the leading-out gap of the cable 330 .

In some embodiments, the air pump assembly 10 further includes a mounting base plate 100 . The installation bottom plate 100 is used to support the sealing box 200 upwards, and has an upwardly extending stop portion 110 at the rear of its upper surface. A front surface of the stop portion 110 is recessed backward to form a positioning recess 112 . The rear portion of the sealing box 200 has a positioning protrusion 212 protruding backward. When the sealing box 200 is located on the upper side of the installation base plate 100, the positioning protrusion 212 snaps into the positioning recessed portion 112, and the front part of the sealing box 200 is locked on the installation base plate 100, so that the sealing box 200 and the installation base plate 100 can be realized. Fasten the connection.

Specifically, when installing the air pump assembly 10, first fix the installation base plate 100 on the refrigerating and freezing device, then place the sealing box 200 containing the air pump 300 on the installation base plate 100, push the sealing box 200 backward to make the positioning protrusion The part 212 snaps into the positioning recessed part 112, and finally the front part of the sealing box 200 is locked with the installation base plate 100. When disassembling the air pump assembly 10 , only the front part of the sealing box 200 is unlocked from the installation base plate 100 to pull the sealing box 200 forward without disassembling the installation base plate 100 . It can be seen from the above that the assembly and disassembly process of the air pump assembly 10 according to the embodiment of the present invention is very convenient.

In some embodiments, as shown in FIG. 3 and FIG. 4 , in order to improve the effect of vibration and noise reduction, a plurality of vibration-damping feet 400 (which may be made of rubber) can also be installed on the installation base 100 . The number of vibration-damping foot pads 400 is preferably four, and the four vibration-damping foot pads 400 are installed in the foot pad installation holes 120 opened at the four corners of the installation base plate 100 .

In addition, in some embodiments, it is preferable to use screws to lock the sealing box 200 to the installation base 100 . As shown in FIG. 4 , an ear plate 214 is provided on the front of the sealing box 200 , and a screw hole is opened on the ear plate 214 , and a threaded hole 130 opposite to the screw hole is opened on the installation base plate 100 . The screw 215 is screwed on the threaded hole 130 through the screw hole.

In some embodiments, as shown in FIG. 3 and FIG. 4 , the installation base 100 can be a sheet metal part, and the aforementioned stopper 110 is an upward flange formed from the installation base 100 to simplify the manufacturing process. The aforementioned positioning recessed portion 112 can be a through hole opened on the flange. The through hole can be a polygonal through hole, and the positioning protrusion 212 is a polygonal structure that matches the shape of the polygonal through hole. 200 degrees of freedom make the sealed box 200 more stable.

Certainly, the stop portion 110 can also be an independently formed component fixed on the installation base 100 , and the positioning recess 112 can also be a circular or other through hole of any shape, or a blind hole.

Fig. 5 is a schematic diagram of the cooperative structure of the air pump and the box body. In some embodiments, as shown in FIG. 5 , an installation frame 240 is arranged inside the box body 210, a plurality of vibration-damping pads are arranged between the installation frame 240 and the inner wall of the sealed box 200, and the air pump 300 is fixed on the installation frame. 240 inside. In this way, the vibration and noise of the suction pump 300 can be reduced.

Specifically, the bottom of the installation frame 240 is provided with two vibration-damping pads 217 with holes in the middle, and the vibration-damping pads 217 are sleeved on the positioning columns 215 on the bottom wall of the box body 210 . The front and rear sides of the installation frame 240 are respectively provided with a circular vibration damping pad 219 , which is clamped in the front and rear clamping grooves 216 inside the box body 210 . Two lateral sides of the mounting frame 240 are respectively fixed with a vibration-damping pad 218 . The air pump 300 is located between the damping pads 217 , 218 , 219 and is fastened to the installation frame 240 by screws. In this way, the vibration during the operation of the air pump 300 will be transmitted to the vibration-damping pads 217, 218, 219 through the installation frame 240, so as to be buffered by them to achieve the purpose of vibration reduction.

Another aspect of the present invention provides a refrigerating and freezing device. Fig. 6 is a schematic partial structural diagram of a refrigerating and freezing device according to an embodiment of the present invention; Fig. 7 is a schematic structural diagram of another perspective of the structure shown in Fig. 6; Fig. 8 is a schematic structural diagram of a refrigerating and freezing device according to an embodiment of the present invention A schematic partial structural view of the device; FIG. 9 is a schematic exploded view of the structure shown in FIG. 8; FIG. 10 is an exploded view of an atmosphere-modulating membrane assembly in a refrigerating and freezing device according to an embodiment of the present invention. As shown in FIGS. 6 to 10 , the refrigerating and freezing device of the embodiment of the present invention may include a box body 80 , a door body (not shown in the figure), an air-conditioning membrane assembly 30 , the aforementioned air pump assembly 10 and a refrigeration system.

A storage space 201 and a compressor compartment 13 are defined inside the box body 80 . The door body is used to open or close the storage space 201 . Further, a storage container is provided in the storage space 201, and there is a controlled atmosphere fresh-keeping space in the storage container. The modified atmosphere fresh-keeping space can be a closed space or a nearly closed space. Preferably, the storage container is a drawer assembly. The storage container may include a drawer cylinder 20 and a drawer body 28 . The drawer cylinder 20 may have a front opening, and is disposed in the storage space 201 , specifically, may be disposed at a lower portion of the storage space 201 . As those skilled in the art can recognize, the drawer cylinder 20 can also be disposed in the middle or upper part of the storage space 201 . The drawer body 28 is slidably disposed in the drawer barrel 20 to be operable to be drawn out from the front opening of the drawer barrel 20 and inserted inward into the drawer barrel 20 . The drawer body 28 can have a drawer end cover, and the drawer end cover can cooperate with the opening of the drawer cylinder 20 to seal the airtight fresh-keeping space. In some alternative embodiments, the storage container may include a barrel and a small door configured to open or close the barrel.

The refrigeration system can be a refrigeration cycle system composed of a compressor, a condenser, a throttling device, and an evaporator. The compressor can be installed in the compressor chamber 13 . The evaporator is configured to directly or indirectly provide cold energy to the storage space 201 . For example, when the refrigerating and freezing device is a domestic compression direct cooling refrigerator, the evaporator can be disposed inside the box body 80 . When the refrigerating and freezing device is a household compressed air-cooled refrigerator, there is an evaporator room in the box 80, and the evaporator room communicates with the storage space 201 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 201 .

The modified atmosphere membrane assembly 30 has at least one modified atmosphere membrane 31 and an oxygen-enriched gas collection chamber, and its surrounding space communicates with the modified atmosphere fresh-keeping space. The air-conditioning membrane assembly 30 can be configured such that the oxygen in the airflow in the space around the air-conditioning membrane assembly 30 is more permeable through the air-conditioning membrane 31 than the nitrogen in the airflow in the space around the air-conditioning membrane assembly 30 and enters the oxygen-enriched gas collection chamber. Specifically, the inner surface of each air-conditioning membrane 31 faces the oxygen-enriched gas collection chamber, so that when the pressure in the oxygen-enriched gas collection chamber is less than the pressure of the surrounding space of the air-conditioning membrane assembly 30, the outer space of the air-conditioning membrane assembly 30 Compared with the nitrogen in the air, the oxygen in the air permeates through at least one atmosphere-modulating membrane 31 and enters the oxygen-enriched gas collection chamber.

The air pump assembly 10 can be arranged in the compressor compartment 13 , and the installation base plate 100 is installed on the bottom wall of the compressor compartment 13 through the vibration-damping pad 400 . The air intake end of the air pump 300 communicates with the oxygen-enriched gas collection chamber of the atmosphere-modulating membrane assembly 30 through the pipeline 50 , so as to exhaust the gas penetrating into the oxygen-enriched gas collection chamber to the outside of the storage container.

In this embodiment, the air suction pump 300 draws air outwards, which can make the pressure of the oxygen-enriched gas collection chamber less than the pressure of the surrounding space of the air-conditioning membrane assembly 30, and further, can make the oxygen in the surrounding space of the air-conditioning membrane assembly 30 Enter the oxygen-enriched gas collection chamber. Since the air-conditioned fresh-keeping space communicates with the space around the air-conditioning membrane assembly 30, the air in the air-conditioning fresh-keeping space will enter the space around the air-conditioning membrane assembly 30, so the oxygen in the air in the air-conditioning fresh-keeping space can also enter the oxygen-enriched gas. The collection cavity, so as to obtain a nitrogen-rich and oxygen-poor gas atmosphere in the controlled atmosphere fresh-keeping space, which is beneficial to food preservation.

The refrigerating and freezing device of the present invention can form a nitrogen-rich and oxygen-deficient gas atmosphere in the controlled atmosphere fresh-keeping space to facilitate food preservation. The gas atmosphere reduces the oxygen content in the fruit and vegetable storage space, reduces the intensity of aerobic respiration of fruits and vegetables, and at the same time 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. Moreover, the gas atmosphere also contains a large amount of nitrogen and other gases, which will not reduce the cooling efficiency of the articles in the controlled atmosphere fresh-keeping space, and can effectively store fruits and vegetables. The air pump 300 is arranged in the compressor compartment 13, which can make full use of the space of the compressor compartment 13 and does not occupy other places, so the extra volume of the refrigeration and freezing device will not be increased, and the structure of the refrigeration and freezing device can be made compact. Moreover, the requirements for the rigidity and strength of the box body 80 and the like are low, and the requirements for realization are very low, so the cost is also very low. The refrigerating and freezing device of the present invention 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 present invention is not only small in size, but also low in noise, and is especially suitable for family and personal use.

In some embodiments of the present invention, the drawer cylinder 20 may be provided with a plurality of micropores, and the storage space 201 and the controlled atmosphere fresh-keeping space are communicated through the plurality of micropores. The micropores can also be called air pressure balance holes, and each micropore can be a millimeter-scale micropore, for example, the diameter of each micropore is 0.1 mm to 3 mm, preferably 1 mm, 1.5 mm, etc. Setting a plurality of micropores can prevent the pressure in the controlled atmosphere fresh-keeping space from being too low, and the setting of a plurality of micropores will not make the nitrogen in the controlled atmosphere fresh-keeping space flow to the large storage space 201, even if the flow is very small It is even negligible, and will not affect the preservation of food in the controlled atmosphere fresh-keeping space. In some optional embodiments of the present invention, micropores may not be provided on the drawer cylinder 20. Even so, there is a large amount of nitrogen and other gases in the air-conditioned fresh-keeping space, and the user does not need to open the drawer body 28 when opening the drawer body 28. Too much effort, compared with the existing vacuum storage room, it will save a lot of effort.

In some embodiments of the present invention, the storage space 201 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 80 can also define a freezing space 12 and a temperature-changing space 27 , the freezing space 12 is arranged below the storage space 201 , and the temperature-changing space 27 is arranged between the freezing space 12 and the refrigerating space. The temperature range in the refrigerated space 12 is generally -14°C to -22°C. The variable temperature space 27 can be adjusted according to demand, so as to store suitable food. The compressor compartment 24 is preferably disposed at the rear and lower part of the refrigerated space 12 . In some alternative embodiments of the present invention, the storage space 201 can also be a freezing space or a variable temperature space, that is to say, the temperature range of the storage space 201 can be controlled from -14°C to -22°C or adjusted according to requirements .

In some embodiments of the present invention, as shown in FIG. 8 and FIG. 9 , the atmosphere-modulating membrane assembly 30 may be disposed on the cylinder wall of the drawer cylinder 20 . The air-conditioning membrane assembly 30 may be flat, and may be preferably and horizontally disposed on the top wall of the drawer cylinder 20 . Specifically, an accommodating cavity 22 is provided in the top wall of the drawer cylinder 20 for accommodating the atmosphere-modulating membrane assembly 30 . For example, at least one first ventilation hole 23 and second ventilation hole 24 are opened in the wall surface between the receiving cavity of the top wall of the drawer cylinder 20 and the controlled atmosphere fresh-keeping space. At least one first ventilation hole 23 is spaced apart from at least one second ventilation hole 24 so as to communicate with the accommodating chamber and the modified atmosphere fresh-keeping space at different positions respectively. Both the first air hole 23 and the second air hole 24 are small holes, and the number can be multiple. In some alternative embodiments, the inner side of the top wall of the drawer cylinder 20 has a concave groove. The atmosphere-modulating membrane assembly 30 is disposed in a recessed groove on the top wall of the drawer cylinder 20 .

Pipeline 50 may include vertical pipe sections. The vertical pipe section is arranged behind the storage space 201 , and the lower end of the vertical pipe section communicates with the inlet of the air pump 300 , and the top of the vertical pipe section communicates with the oxygen-enriched gas collection chamber of the atmosphere-modulating membrane module 30 . The vertical pipe section can be arranged close to the side shell and the back plate in the box body 80, and the vertical pipe section can be equipped with a thermal insulation sleeve or a heat preservation pipe, which can prevent the cold energy in the oxygen in the vertical pipe section from being transferred to the side shell and the back plate, and can prevent produce condensation.

In some embodiments of the present invention, in order to promote the gas flow in the controlled atmosphere fresh-keeping space and the storage chamber 22, the refrigerating and freezing device may further include a fan 60, and the fan 60 may be arranged in the storage chamber, and is configured to promote the air flow in the controlled-atmosphere fresh-keeping space. The gas enters the storage chamber 22 through the first ventilation hole 23 , and the gas in the storage chamber 22 enters the modified atmosphere fresh-keeping space through the second ventilation hole 24 . That is to say, the blower 60 can make the air in the controlled atmosphere fresh-keeping space return to the controlled-atmosphere fresh-keeping space through the at least one first ventilation hole 23 , the accommodating cavity and the at least one second ventilation hole 24 in sequence.

The fan 60 is preferably a centrifugal fan, and is arranged at the first air hole 23 in the accommodation chamber 22 . That is to say, the centrifugal fan is located above at least one first ventilation hole 23 , and the rotation axis is vertically downward, and the air inlet is directly opposite to the first ventilation hole 23 . The air outlet of the centrifugal fan can face the air-conditioning membrane module 30 . The air-conditioning membrane assembly 30 is disposed above the at least one second ventilation hole 24 such that each air-conditioning membrane of the air-conditioning membrane assembly 30 is parallel to the top wall of the drawer cylinder 20 . At least one first ventilation hole 23 is arranged at the front of the top wall, and at least one second ventilation hole 24 is arranged at the rear of the top wall. That is, the centrifugal fan is arranged at the front of the accommodation chamber 22 , and the air-conditioning membrane module 30 is arranged at the rear of the accommodation chamber 22 . Further, the top wall of the drawer cylinder 20 includes a main board part 25 and a cover board part 26, a recessed part is formed in a partial area of the main board part 25, and the cover board part 26 is detachably covered on the recessed part to form an accommodating Cavity 22. In order to facilitate the manufacture of the drawer cylinder 20 , the main board part 25 can be integrally formed with the side wall, bottom wall and rear wall of the drawer cylinder 20 .

In some embodiments of the present invention, as shown in FIG. 10 , the air-conditioning membrane assembly 30 may be flat, and the air-conditioning membrane assembly 30 may also include a support frame 32 . There can be two atmosphere-modulating membranes 31 installed on both sides of the support frame 32, so that the two atmosphere-modulating membranes 31 and the support frame 32 together form an oxygen-enriched gas collection chamber.

Further, the supporting frame 32 may include a frame, ribs and/or flat plates and other structures arranged in the frame, airflow passages may be formed between the ribs, between the ribs and the flat plates, etc., on the surface of the ribs, on the surface of the flat plates Grooves can be opened on the top to form airflow channels. The ribs and/or flat plates can improve the structural strength of the air-conditioning membrane module 30 and the like. That is to say, the support frame 32 has a first surface and a second surface parallel to each other, and the support frame 32 is formed on the first surface, extends on the second surface, and passes through the support frame 32 to communicate with the first surface. A plurality of gas flow passages on the surface and the second surface together form an oxygen-enriched gas collection chamber; at least one air-conditioning membrane 31 is two planar air-conditioning membranes, which are respectively laid on the first surface and the second surface of the support frame 32 Two surfaces.

In some embodiments of the present invention, the supporting frame 32 includes a suction hole 33 communicating with the aforementioned at least one air flow channel, and is provided on the frame to allow the oxygen in the oxygen-enriched gas collection chamber to be output. The suction hole 33 communicates with the suction pump 300 . The air suction hole 33 can be arranged on the long edge of the frame, or on the short edge of the frame, to determine according to the orientation of the air-conditioning membrane module 30 or the actual design requirements, for example, in the implementation shown in Figure 8 and Figure 9 For example, the suction hole 33 can be disposed on the long edge of the frame. The atmosphere-modulating membrane 31 is first installed on the frame by double-sided adhesive 34 , and then sealed by sealant 35 .

In some embodiments, the support frame 32 may include a frame, a plurality of first ribs and a plurality of second ribs. The plurality of first ribs are longitudinally spaced inside the frame and extend transversely, and one side surface of the plurality of first ribs forms a first surface. A plurality of second ribs are arranged laterally at intervals on the other side surface of the plurality of first ribs and extend longitudinally, and one side surface of the plurality of second ribs away from the first rib forms a second surface . The supporting frame 32 of the present invention is provided with a plurality of first ribs longitudinally spaced and extending transversely inside its frame and a plurality of first ribs transversely spaced and extending longitudinally on one side surface of the aforementioned plurality of first ribs. The two ribs, on the one hand, ensure the continuity of the airflow channel, on the other hand, greatly reduce the volume of the supporting frame 32, and greatly enhance the strength of the supporting frame 32. In addition, the above-mentioned structure of the support frame 32 ensures that the air-conditioning membrane 31 can obtain sufficient support, and can always maintain a good flatness even under the condition of high negative pressure inside the oxygen-enriched gas collection chamber, ensuring that the air-conditioning membrane 31 can obtain sufficient support. service life of the component 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 arranged at intervals, and a plurality of first narrow ribs are arranged between two adjacent first wide ribs. The aforementioned plurality of second ribs may include: a plurality of second narrow ribs and a plurality of second wide ribs, the plurality of second wide ribs are arranged at intervals, and a plurality of second wide ribs are arranged between adjacent two second wide ribs. Second narrow rib. Those skilled in the art can easily understand that "wide" and "narrow" here are relative terms.

In some embodiments, each first wide rib is inwardly recessed from its side surface forming the first surface to form a first groove; each second wide rib is formed from its side surface forming the second surface The inward depression forms the second groove, thereby improving the connectivity of the internal grid structure of the supporting frame 32 under the premise of ensuring a small thickness (or small volume).

In a further embodiment, a part of the surface of each first wide rib that faces away from the first surface extends toward the second rib to be flush with the second surface, and inwards from the part of the surface that is flush with the second surface The recess forms a third groove; the intersection of the third groove and the second groove communicates to form a cross groove. Part of the surface of at least one second wide rib in the plurality of second wide ribs facing away from the second surface extends toward the first rib until it is flush with the first surface, and from the portion of the surface that is flush with the first surface Inwardly recessed to form a fourth groove; where the fourth groove communicates with the intersection of the first groove to form a cross groove. In some embodiments of the present invention, in order to facilitate the flow of air, as shown in FIG. The inner flow passes through the outer surface of each air-conditioning membrane 31 of the air-conditioning membrane assembly 30 away from the oxygen-enriched gas collection chamber. The plurality of wind guiding ribs can be divided into two groups, including a first group of wind guiding ribs and a second group of wind guiding ribs arranged symmetrically about a plane. Each group of wind guiding ribs includes a first wind guiding rib, at least one second wind guiding rib and at least one third wind guiding rib. The first air guide rib extends from the air outlet of the centrifugal fan to one side of the accommodation cavity, and extends to a lateral outer side of the air-conditioning membrane module 30 . Each second air guiding rib is disposed between two first air guiding ribs, and is located between the air-conditioning membrane assembly 30 and the centrifugal fan. Each third air guiding rib is located on a lateral outer side of the air-conditioning membrane assembly 30, so as to guide the airflow so that the airflow enters between the air-conditioning membrane assembly 30 and the bottom surface or the top surface of the accommodating cavity from the lateral sides of the air-conditioning membrane assembly 30 the gap between.

So far, those skilled in the art should appreciate that, although a number of exemplary embodiments of the present invention have been shown and described in detail herein, without departing from the spirit and scope of the present invention, the disclosed embodiments of the present invention can still be used. Many other variations or modifications consistent with the principles of the invention are directly identified or derived from the content. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims (10)

1. it is a kind of to be evacuated pump group part, it is characterised in that to include：

Seal box, it includes the box body with upper side opening and the upper lid for covering the upper side opening, the box body Side wall top edge offers respectively two semicircular indentations with the side wall lower limb of the upper lid, and lid is installed on described on described During box body, two semicircular indentations of the box body are relative one by one with two semicircular indentations of the upper lid respectively, to be formed Two pipeline fairleads；With

Air pump, it is arranged on the inside of the seal box and its air inlet pipe and escape pipe are drawn respectively by a pipeline Hole leads to the outside of the seal box.

2. pumping pump group part according to claim 1, it is characterised in that

The side wall top edge of the box body is further opened with cable and draws breach, described for the cable of the air pump to be led to The outside of seal box.

3. pumping pump group part according to claim 1, it is characterised in that also include：

Mounting base, the front surface that its upper surface rear portion has upwardly extending stopper section, the stopper section is concavely formed backward Locating recess；And

The seal box is located at the upside of the mounting base, and its rear portion has the positioning cams for protruding out backward, described fixed Position lobe snaps in the locating recess, and the front portion of the seal box is locked in the mounting base.

4. pumping pump group part according to claim 3, it is characterised in that

The mounting base is sheet metal component, and the stopper section is the flange upwards that the mounting base is formed；And the positioning Depressed part is the through hole opened up on the flange.

5. pumping pump group part according to claim 3, it is characterised in that

The front portion of the seal box is provided with screw hole, the screw hole and the screwed hole phase being opened on the mounting base It is right, so that the seal box is locked in into the mounting base using screw.

6. pumping pump group part according to claim 3, it is characterised in that

Multiple shock absorption footpads are installed on the mounting base.

7. pumping pump group part according to claim 1, it is characterised in that also include：

Installation frame, it is arranged on the tray interior and multiple vibration damping cushion blocks is provided with and the inwall of the box body between；And

The air pump is fixed in the installation frame.

8. a kind of refrigerating device, it is characterised in that include：

Casing, defines storage space and compressor bin in it, container for storing is provided with the storage space, and the storing holds There is controlled atmosphere space in device；

Controlled atmosphere membrane module, it has at least one controlled atmosphere film and an oxygen rich gas collecting chamber, and its surrounding space and the controlled atmosphere The connection of fresh-keeping space, the controlled atmosphere membrane module be arranged so that the oxygen in the controlled atmosphere membrane module surrounding space air-flow relative to Nitrogen in the controlled atmosphere membrane module surrounding space air-flow more enters the oxygen rich gas collecting chamber through the controlled atmosphere film； With

Pumping pump group part according to any one of claim 1 to 7, it is arranged in the compressor bin, the pumping The inlet end of pump is connected via pipeline with the oxygen rich gas collecting chamber of the controlled atmosphere membrane module, will penetrate the oxygen rich air Body is collected the gas of intracavity and is pumped to outside the container for storing.

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

The container for storing is drawer appliance, and it includes drawer cylinder and the drawer being slidably mounted in the drawer cylinder Body；

The accommodating chamber connected with the controlled atmosphere space is provided with the roof of the drawer cylinder, to house the controlled atmosphere film Component；

Offer at least in wall between the accommodating chamber of the roof of the drawer cylinder and the controlled atmosphere space One the first passage and at least one second passages being spaced apart with the first passage described at least one, with respectively not The accommodating chamber and the controlled atmosphere space are connected with position；And

The refrigerating device also includes blower fan, and it is arranged on the receiving intracavity, to promote the controlled atmosphere space Gas returns successively described via described at least one first passages, the accommodating chamber and at least one second passage Controlled atmosphere space.

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

The controlled atmosphere membrane module also includes support frame, and it has the first surface and second surface being parallel to each other, and described It is formed with support frame frame and extends on the first surface respectively, extends on the second surface, and through the support To connect multiple gas channels of the first surface and second surface, the plurality of gas channel is collectively forming the richness to framework Carrier of oxygen collecting chamber；And

At least one controlled atmosphere film is two planar shaped controlled atmosphere films, and the first surface and the of the support frame is laid on respectively On two surfaces.