Refrigeration and freezing equipment

Abstract

The present invention provides a refrigeration and freezing device. The refrigeration and freezing device comprises: an air pump outer box, the air pump outer box is installed on the box body; an air pump inner box, the air pump inner box is installed in the air pump outer box through a box body shock absorbing device; and an air pump, the air pump is installed in the air pump inner box through the air pump shock absorbing device; the air inlet of the air pump is connected to the gas conditioning membrane assembly. Because of the air pump outer box, the air pump inner box, the box body shock absorbing device and the air pump shock absorbing device, the noise of the air pump itself during operation is significantly reduced, and the noise of the air pump operation is reduced to the outside, such as reducing the vibration of the air pump to the box body, thereby reducing the noise of the gas conditioning preservation process and the noise of the refrigeration and freezing device.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration equipment, in particular to a refrigeration and freezing device. Background Art

[0002] The function of a refrigeration and freezing device is to provide a low-temperature environment to extend the storage time of items. At present, in order to further improve the preservation time and preservation effect, technical personnel in this field have designed a refrigeration and freezing device with a controlled atmosphere preservation space. The controlled atmosphere device includes a controlled atmosphere membrane and a vacuum pump, which allows oxygen-rich and high-humidity gas to pass through the upper and lower surfaces of the controlled atmosphere membrane. When the gas passes through the surface of the controlled atmosphere membrane, a large amount of oxygen is discharged from the preservation space, forming a gas atmosphere that is conducive to food preservation. However, the inventors found that after adopting the controlled atmosphere preservation technology, the operating noise becomes significantly larger. Therefore, how to reduce the noise of the refrigeration and freezing device is also a problem that needs to be solved urgently. Summary of the invention

[0003] In view of the above problems, the present invention is proposed to provide a refrigerator-freezer that overcomes the above problems or at least partially solves the above problems.

[0004] An object of the present invention is to provide a refrigeration and freezing device with a controlled atmosphere preservation function and to reduce the noise during the controlled atmosphere preservation process.

[0005] Furthermore, a further object of the present invention is to reduce the outward propagation of the operating noise of the vacuum pump.

[0006] In order to achieve at least one of the above-mentioned purposes, the present invention provides a refrigeration and freezing device, comprising a box, a modified atmosphere membrane assembly and an air pump assembly, wherein the box has a modified atmosphere preservation space, the air pump assembly and the modified atmosphere membrane assembly are installed in the box, and the air pump assembly is connected to the modified atmosphere preservation space via the modified atmosphere membrane assembly, so as to extract more oxygen in the gas in the modified atmosphere preservation space than nitrogen to the outside of the modified atmosphere preservation space; wherein the air pump assembly comprises:

[0007] An air pump outer box, the air pump outer box is installed on the box body;

[0008] An air pump inner box, the air pump inner box being installed in the air pump outer box through a box body shock absorbing device; and

[0009] An air pump is installed in the air pump inner box through an air pump shock absorbing device.

[0010] Optionally, the air pump inner box and the air pump outer box are spaced apart.

[0011] Optionally, the air pump outer box has a first open box body with an opening facing forward, upward or backward.

[0012] Optionally, two oppositely disposed and vertically extending box body walls of the first open box body are each provided with a plurality of grooves, and each of the grooves extends in a direction perpendicular to an opening plane of the first open box body;

[0013] The air pump inner box is provided with a plurality of connecting shafts;

[0014] The box body shock absorbing device comprises a plurality of shock absorbing blocks, each of which is mounted on one of the connecting shafts and is located in one of the grooves, and one or more shock absorbing blocks are arranged in each of the grooves.

[0015] Optionally, the air pump outer box further comprises a first box cover, which is arranged at the opening of the first open box body.

[0016] Optionally, the box body wall of the first opening box body arranged opposite to the opening thereof is the bottom wall of the first opening box body;

[0017] The air pump inner box has a second open box body, and the opening of the second open box body faces downwardly toward the bottom wall of the first open box body.

[0018] Optionally, the air pump inner box further comprises a second box cover, which is arranged at the opening of the second open box body.

[0019] Optionally, the air pump shock absorbing device is made of a buffer material and wraps the pump body of the air pump.

[0020] Optionally, each of the shock absorbing blocks comprises:

[0021] a solid portion, the solid portion being mounted on the connecting shaft; and

[0022] A plurality of convex ribs, each of which extends along the axial direction of the connecting shaft, and the plurality of convex ribs are evenly distributed on the peripheral wall surface of the solid part.

[0023] Optionally, the opening of the first opening box body faces forward;

[0024] A partition wall is provided between the air pump shock absorbing device and the lower box body wall and the box body walls on both sides of the second open box body, and at least one horizontal partition board and / or at least one vertical partition board are provided between the partition wall and the lower box body wall and the box body walls on both sides of the second open box body, so as to separate the space between the partition wall and the lower box body wall and the box body walls on both sides of the second open box body;

[0025] The air pump shock absorbing device contacts and abuts against the partition wall;

[0026] The box body also has a first storage compartment; the atmosphere-controlled fresh-keeping space is arranged at the bottom of the first storage compartment; and the air pump assembly is arranged at the rear of the atmosphere-controlled fresh-keeping space.

[0027] The bottom of the rear wall of the first storage compartment is provided with a through hole for installation;

[0028] The first opening box body is installed in the installation through hole; the outer side of the first opening box body is a foaming layer.

[0029] In the refrigeration and freezing device of the present invention, because it has an air pump outer box and an air pump inner box, and the air pump is installed in the air pump inner box through a special structure, and the air pump inner box is installed in the air pump outer box through a special structure, the noise of the air pump itself during operation is significantly reduced, and the outward propagation of the operating noise of the air pump is reduced, such as reducing the vibration of the air pump from being transmitted to the box body, thereby reducing the noise of the atmosphere-controlled preservation process and the noise of the refrigeration and freezing device.

[0030] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0032] Figure 1 is a schematic structural diagram of a refrigeration and freezing device according to an embodiment of the present invention;

[0033] Figure 2 yes Figure 1 A schematic structural diagram of another viewing angle of the structure shown;

[0034] Figure 3 is a schematic diagram of the structure of a first inner container in a refrigeration and freezing device according to an embodiment of the present invention;

[0035] Figure 4 is a schematic diagram of a partial structure of a refrigeration and freezing device according to an embodiment of the present invention;

[0036] Figure 5 is a schematic structural diagram of an air extraction pump assembly in a refrigeration and freezing device according to an embodiment of the present invention;

[0037] Figure 6 Schematic diagram of the structure of an air extraction pump assembly in a refrigeration and freezing device according to an embodiment of the present invention

[0038] Figure 7 yes Figure 6 A partial structural schematic diagram of the air pump assembly shown;

[0039] Figure 8 yes Figure 6 A partial structural schematic diagram of the air pump assembly shown;

[0040] Fig. 9 yes Figure 6 A partial structural schematic diagram of the air pump assembly shown. DETAILED DESCRIPTION

[0041] Figure 1 and Figure 2 They are schematic diagrams of the structure of a refrigeration and freezing device according to an embodiment of the present invention. As can be appreciated by those skilled in the art, Figure 1 Shown is a front view of a refrigerator-freezer. Figure 2 The refrigerator-freezer is shown from the rear and is Figure 1 and Figure 2 In the refrigeration and freezing device shown in the figure, in order to illustrate one embodiment of the present invention, components such as the door of the refrigeration and freezing device are not shown. Figure 1 and Figure 2 As shown, and refer to Figures 3 to 7 The embodiment of the present invention provides a refrigeration and freezing device, including a box body 20, a modified atmosphere membrane assembly and an air pump assembly 30. The box body 20 has a modified atmosphere preservation space 25, the air pump assembly 30 and the modified atmosphere membrane assembly are installed on the box body 20, and the air pump assembly 30 is connected to the modified atmosphere preservation space 25 via the modified atmosphere membrane assembly to extract more oxygen in the gas of the modified atmosphere preservation space 25 than nitrogen to the outside of the modified atmosphere preservation space 25. The modified atmosphere preservation space 25 can be a closed space or a nearly closed space.

[0042] For example, the box body 20 further includes a first storage compartment 24, a second storage compartment and a compressor compartment. The second storage compartment is arranged at the lower side of the first storage compartment 24, and the compressor compartment is arranged at the lower rear side of the second storage compartment. The atmosphere-controlled fresh-keeping space 25 can be arranged at the bottom of the first storage compartment 24. The vacuum pump assembly 30 is arranged at the rear of the atmosphere-controlled fresh-keeping space 25. The first storage compartment 24 is a refrigerator, and the second storage compartment is a freezer. Further, as Figure 4 As shown, the box body 20 further includes a storage container 26 with a forward opening, and a drawer 27 installed in the storage container 26. The space in the drawer 27 is the above-mentioned atmosphere-controlled fresh-keeping space 25.

[0043] In particular, if Figures 5 to 9As shown, the air pump assembly 30 may include an air pump outer box 40, an air pump inner box 50 and an air pump 70. The air pump outer box 40 is installed on the box body 20. The air pump inner box 50 is installed in the air pump outer box 40 through a box body shock absorbing device. Preferably, the air pump inner box 50 is spaced apart from the air pump outer box 40. The air pump 70 is installed in the air pump inner box 50 through an air pump shock absorbing device 80. Further, the air pump 70 may be spaced apart between each box body wall of the air pump inner box 50. The air inlet of the air pump 70 is connected to the gas conditioning membrane assembly. The vibration and noise of the air pump 70 when working can be reduced, and the stability and user experience of the air pump 70 can be improved.

[0044] The refrigeration and freezing device in the embodiment of the present invention comprises an air pump outer box 40, an air pump inner box 50, a box body shock absorbing device and an air pump shock absorbing device 80, which significantly reduce the noise of the vacuum pump 70 itself during operation, and reduce the outward propagation of the operating noise of the vacuum pump 70, such as reducing the vibration of the vacuum pump 70 from being propagated to the box body 20, thereby reducing the noise of the atmosphere-controlled preservation process and the noise of the refrigeration and freezing device.

[0045] In some embodiments of the present invention, Figures 5 to 9 As shown, the air pump outer box 40 has a first open box body 41 with an opening facing forward, upward or backward. Further, the box body wall of the first open box body 41 arranged opposite to its opening is the bottom wall of the first open box body 41. The air pump inner box 50 has a second open box body 51, and the opening of the second open box body 51 faces the bottom wall of the first open box body 41 downward. In some preferred embodiments of the present invention, the air pump outer box 40 also includes a first box cover 42, which is arranged at the opening of the first open box body 41 and is provided with a sealing ring. The air pump inner box 50 also includes a second box cover 52, which is arranged at the opening of the second open box body 51 and is provided with a sealing ring.

[0046] In some embodiments of the present invention, a plurality of grooves 61 are provided on two relatively arranged and vertically extending box walls of the first opening box body 41, and each groove 61 extends in a direction perpendicular to the opening plane of the first opening box body 41. The opening of the first opening box body 41 is preferably forward. Each groove 61 extends in a horizontal direction and has a notch at the front end. A plurality of connecting shafts 62 are provided on the air pump inner box 50. The box body shock absorbing device includes a plurality of shock absorbing blocks 63, each of which is mounted on a connecting shaft 62 and is located in a groove 61, and one or more shock absorbing blocks 63 are arranged in each groove 61. For example, each shock absorbing block 63 is a rubber pad, including a solid part and a plurality of ribs. The solid part is mounted on the connecting shaft 62. Each rib extends in the axial direction of the connecting shaft 62, and a plurality of ribs are evenly distributed on the peripheral wall surface of the solid part.

[0047] In some embodiments of the present invention, the air pump shock absorbing device 80 is made of a buffer material and wraps the pump body of the air pump 70. Further, a partition wall 53 is provided between the air pump shock absorbing device 80 and the lower box body wall and the box body walls on both sides of the second open box body 51, and at least one horizontal partition and / or at least one vertical partition are provided between the partition wall 53 and the lower box body wall and the box body walls on both sides of the second open box body 51 to separate the partition wall 53 from the lower box body wall and the box body walls on both sides of the second open box body 51. The air pump shock absorbing device 80 contacts and abuts against the partition wall 53.

[0048] In some embodiments of the present invention, the box body 20 further comprises a first inner liner 21 and a second inner liner. The first inner liner 21 and the second inner liner define a first storage compartment 24 and a second storage compartment, respectively. Figure 3 As shown, the bottom of the rear wall of the first liner 21 has a through hole 211 for installation. The opening of the first opening box body 41 faces forward and is installed in the through hole 211 for installation. The outer side of the first opening box body 41 is a foaming layer. During installation, the first opening box body 41 can be first installed at the through hole 211 for installation, and then foaming is performed to form a pre-embedded box. The first opening box body 41 is arranged in the installation opening and then extends into the foaming layer, which can not only save space in the refrigeration and freezing device, but also greatly reduce the noise emitted by the vacuum pump 70 by utilizing the sound insulation effect of the first opening box body 41 itself and the sound insulation effect of the foaming layer, and prevent the propagation of suction sound and exhaust sound. It also isolates the noise transmission between the back plate and the rear plate. Since the large plane of the back plate can be equivalent to a vibration amplifier, after isolation, the back plate will not cause vibration amplification, and thus will not generate noise due to vibration.

[0049] In some embodiments of the present invention, the rear central area of ​​the first inner liner 21 is recessed backwards to form an air duct for the refrigerator-freezer. The first open box body 41 is arranged in the outer area of ​​the air duct and is located on the lower right side of the air duct, so that the first open box body 41 will not occupy the storage space and air duct position of the refrigerator-freezer to achieve full utilization of the space.

[0050] In some embodiments of the present invention, Figures 1 to 3 as well as Figure 5 As shown, a suction connection part connecting the inside and outside of the first open box body 41 is provided on the box wall of the first open box body 41, and one end of the suction connection part located inside the first open box body 41 is connected to the suction port of the suction pump 70, and the refrigeration and freezing device also includes a suction pipe 37, a first end of which is connected to one end of the suction connection part located outside the first open box body 41, and extends through the foaming layer, and a second end of which is connected to the interface 23 of the first liner 21 leading to the gas-controlled safety space. The suction pipe 37 is penetrated in the foaming layer to reduce the noise of the suction process by using the sound insulation effect of the foaming layer.

[0051] An exhaust connection portion connecting the inside and outside of the first open box body 41 is also provided on the box wall of the first open box body 41, and one end of the exhaust connection portion located inside the first open box body 41 is connected to the exhaust port of the vacuum pump 70, and the refrigeration and freezing device also includes an exhaust pipe 38, a first end of which is connected to one end of the exhaust connection portion located outside the first open box body 41, and extends through the foaming layer. The noise of the exhaust process is reduced through the sound insulation effect of the foaming layer, and its second end leads to the compressor compartment of the refrigeration and freezing device.

[0052] In some embodiments of the present invention, at least part of the exhaust pipe 38 is arranged side by side with at least part of the drain pipe 22 of the refrigeration and freezing device for draining the air duct at the rear side of the first storage compartment 24, so that the exhaust pipe 38 is guided by the drain pipe 22, which is easy to install and fix, and avoids the position displacement of the exhaust pipe 38 caused by long-term use, so as to discharge the oxygen-rich gas to the compressor compartment of the refrigeration and freezing device, and avoids setting another pipeline in the foaming layer to reduce the thermal insulation performance of the foaming layer. For example, the exhaust pipe 38 can be tied to the drain pipe 22 or a ring or other structure can be set on the outer wall of the drain pipe 22, so that the exhaust pipe 38 can be guided by the drain pipe 22 to discharge the gas to the compressor compartment.

[0053] In this embodiment, the suction pipe 37 and the exhaust pipe 38 of the vacuum pump 70 located outside the first opening box body 41 are inserted into the foam layer, which can effectively reduce the noise of the suction process and the exhaust process. At least part of the exhaust pipe 38 is arranged side by side with at least part of the drain pipe 22 of the refrigeration and freezing device to discharge the oxygen-rich gas to the compressor compartment of the refrigeration and freezing device. This arrangement of the exhaust pipe 38 is conducive to the installation and fixation of the exhaust pipe 38, avoids the position change of the exhaust pipe 38 caused by long-term use, and avoids setting up another pipeline in the foam layer to reduce the thermal insulation effect of the foam layer.

[0054] In some embodiments of the present invention, Figures 6 to 9 As shown, the suction pipe 371 of the suction pump 70 extends directly from the front side of the air pump outer box 40 to communicate with the atmosphere-controlled membrane assembly, and the exhaust pipe 381 extends directly from the rear side of the air pump outer box 40 to extend toward the compressor compartment.

[0055] In some embodiments of the present invention, the storage container 26 may include a accommodating chamber and an ion generating device. Of course, other positions or structures in the housing 20 may also define the accommodating chamber. The accommodating chamber is connected to the atmosphere-controlled fresh-keeping space 25 so that the gas flows between the atmosphere-controlled fresh-keeping space 25 and the accommodating chamber. The atmosphere-controlled membrane assembly is disposed in the accommodating chamber. The ion generating device is configured to be excited to ionize the gas in the accommodating chamber to generate a deodorizing and sterilizing substance, and the deodorizing and sterilizing substance flows with the gas to sterilize or deodorize the accommodating chamber and / or the atmosphere-controlled fresh-keeping space 25. The deodorizing and sterilizing substance flows with the gas to sterilize or deodorize the accommodating chamber and / or the atmosphere-controlled fresh-keeping space 25. If the ion generating device changes water vapor and oxygen into ions with strong oxidizing ability, the mold substances in the atmosphere-controlled fresh-keeping space 25 will be removed after sufficient circulation, which greatly improves the efficiency and fresh-keeping period of the atmosphere-controlled fresh-keeping space, and can more comprehensively maintain the taste of fruits and vegetables.

[0056] In some embodiments of the present invention, the refrigeration and freezing device includes a fan. A first ventilation structure and a second ventilation structure are provided between the accommodating chamber and the atmosphere-controlled fresh-keeping space 25 to connect the accommodating chamber and the atmosphere-controlled fresh-keeping space 25 at different positions. The fan is configured to cause the gas in the atmosphere-controlled fresh-keeping space 25 to return to the atmosphere-controlled fresh-keeping space 25 via the first ventilation structure, the accommodating chamber, and the second ventilation structure in sequence. Further, a guide air duct is provided between the fan and the atmosphere-controlled membrane assembly to cause the gas flowing out of the fan to flow to the atmosphere-controlled membrane assembly. An opening is provided on the air duct wall of the guide air duct. The ion generating part of the ion generating device is provided at the opening. The control part of the ion generating device is provided in the accommodating chamber and is located outside the guide air duct, and the air duct wall prevents the gas entering the accommodating chamber from flowing to the control part. The cooling gas or high humidity environment can be prevented from causing damage and failure to the control part, especially preventing the moisture in the cooling gas from entering the control part. The control part will not occupy the space of the guide air duct, and the air supply is smooth. The first ventilation structure includes at least one first ventilation hole, and the second ventilation structure includes at least one second ventilation hole. At least one first ventilation hole and at least one second ventilation hole are provided in the partition wall between the accommodating cavity and the atmosphere-controlled fresh-keeping space 25. The fan is a centrifugal fan, which is arranged in the accommodating cavity, and the air inlet of the centrifugal fan faces the at least one first ventilation hole. The atmosphere-controlled membrane assembly is preferably flat and parallel to the partition wall between the accommodating cavity and the atmosphere-controlled fresh-keeping space 25.

[0057] In some embodiments of the present invention, the control unit of the ion generating device has a control circuit module, which includes: a power input interface, a boost circuit, and a high-voltage output interface, the power input interface is used to connect an externally provided DC power supply, the boost circuit is used to controllably convert the DC power supply into a first voltage for generating a deodorizing and sterilizing substance and a second voltage for heating, and the high-voltage output interface is used to output a first voltage or a second voltage, wherein the first voltage is higher than the second voltage. And the high-voltage output interface is connected to the ion generating unit. The ion generating unit is configured to be excited by the first voltage to ionize the gas to generate the deodorizing and sterilizing substance, and to generate heat at the second voltage to eliminate condensation. The ion generating unit may include a first electrode and a second electrode connected to the control unit, and a discharge gap is provided between the first electrode and the second electrode, and the discharge gap is configured to be broken down by the first voltage so that the surrounding gas is excited and ionized. And the first electrode and the second electrode are kept isolated and each generates heat at the second voltage. The control unit and the ion generating unit may be connected by a cable.

[0058] In some embodiments of the present invention, the control circuit module further includes a voltage feedback port, a controlled end, and an inverter. The voltage feedback port is connected to the boost circuit, and is used to output a feedback voltage corresponding to the first voltage or the second voltage to indicate the boost state of the boost circuit. The controlled end is connected to the boost circuit, and is configured to receive an external control signal (the control signal may be a control signal issued by a main control board of a refrigeration and freezing device or a controller of other refrigeration and freezing devices, and is used to adjust the working state of the ion generating device according to the operating conditions of the refrigeration and freezing devices), so that the boost circuit converts the first voltage or the second voltage according to the control signal. The inverter is configured to controllably invert the DC power supply into AC power, and the voltage of the AC power is the first voltage or the second voltage.

[0059] Those skilled in the art should understand that the "refrigeration and freezing device" referred to in the present invention is not limited to a refrigeration and freezing device in the general sense that has a refrigeration chamber and a freezer chamber and is used to store food, but can also be other devices with refrigeration functions, such as a wine cabinet, a refrigerated tank, etc.

[0060] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all these other variations or modifications.

Claims

1. A refrigeration and freezing device, characterized in that: The invention comprises a box body, a modified atmosphere membrane assembly and an air pump assembly, wherein the box body has a modified atmosphere fresh-keeping space, the air pump assembly and the modified atmosphere membrane assembly are installed in the box body, and the air pump assembly is connected with the modified atmosphere fresh-keeping space via the modified atmosphere membrane assembly, so as to exhaust more oxygen in the gas in the modified atmosphere fresh-keeping space than nitrogen to the outside of the modified atmosphere fresh-keeping space; wherein the air pump assembly comprises: An air pump outer box, the air pump outer box is installed on the box body; the air pump outer box has a first open box body, and two oppositely arranged and vertically extending box body walls of the first open box body are each provided with a plurality of grooves, each of the grooves extending in a direction perpendicular to the opening plane of the first open box body; An air pump inner box, the air pump inner box is installed in the air pump outer box through a box body shock absorbing device; the air pump inner box is provided with a plurality of connecting shafts; the box body shock absorbing device includes a plurality of shock absorbing blocks, each of the shock absorbing blocks is installed on one of the connecting shafts and is located in one of the grooves, and one or more shock absorbing blocks are arranged in each of the grooves; and An air pump is installed in the air pump inner box through an air pump shock-absorbing device; and the air inlet of the air pump is connected to the atmosphere-adjusting membrane assembly.

2. The refrigeration and freezing device according to claim 1, characterized in that: The air pump inner box is spaced apart from the air pump outer box, and the air pump is spaced apart from each box body wall of the air pump inner box.

3. The refrigeration and freezing device according to claim 2, characterized in that: The opening of the first opening box body faces forward, upward or backward.

4. The refrigeration and freezing device according to claim 1, characterized in that: The air pump outer box also includes a first box cover, which is arranged at the opening of the first open box body.

5. The refrigerator-freezer according to claim 1, characterized in that: The box body wall of the first opening box body opposite to the opening is the bottom wall of the first opening box body; The air pump inner box has a second open box body, and the opening of the second open box body faces downwardly toward the bottom wall of the first open box body.

6. The refrigerator-freezer according to claim 5, characterized in that: The air pump inner box also includes a second box cover, which is arranged at the opening of the second open box body.

7. The refrigerator-freezer according to claim 5, characterized in that: The air pump shock absorbing device is made of a buffer material and wraps the pump body of the air pump.

8. The refrigerator-freezer according to claim 1, characterized in that: Each of the shock absorbing blocks comprises: a solid portion, the solid portion being mounted on the connecting shaft; and A plurality of convex ribs, each of which extends along the axial direction of the connecting shaft, and the plurality of convex ribs are evenly distributed on the peripheral wall surface of the solid part.

9. The refrigerator-freezer according to claim 7, characterized in that: The opening of the first opening box body faces forward; A partition wall is provided between the air pump shock absorbing device and the lower box body wall and the box body walls on both sides of the second open box body, and at least one horizontal partition board and / or at least one vertical partition board are provided between the partition wall and the lower box body wall and the box body walls on both sides of the second open box body, so as to separate the space between the partition wall and the lower box body wall and the box body walls on both sides of the second open box body; The air pump shock absorbing device contacts and abuts against the partition wall; The box body also has a first storage compartment; the atmosphere-controlled fresh-keeping space is arranged at the bottom of the first storage compartment; the air pump assembly is arranged at the rear of the atmosphere-controlled fresh-keeping space; The bottom of the rear wall of the first storage compartment is provided with a through hole for installation; The first opening box body is installed in the installation through hole; the outer side of the first opening box body is a foaming layer.

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