Refrigeration and freezing equipment

Abstract

The present invention provides a refrigeration and freezing device. The refrigeration and freezing device includes: an air pump box, the air pump box is installed on the box body, and the air pump box has an open box body; the open box body has a placement wall located on the lower side and extending in the horizontal direction; a plurality of mounting protrusions are arranged on the placement wall of the open box body; a plurality of compression springs, the lower end of each compression spring is sleeved on one of the mounting protrusions; a support plate, installed on the upper end of the plurality of compression springs; and an air pump, installed on the upper side of the support plate; the air inlet of the air pump is connected to the atmosphere-controlled membrane assembly. Because there is an air pump box, and the air pump is installed on the air pump box through a special structure, the noise of the air pump itself during operation is significantly reduced, and the outward transmission 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.

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 box, the air pump box is installed on the box body, and the air pump box has an open box body; the open box body has a placement wall extending in the horizontal direction;

[0008] A plurality of mounting protrusions are arranged on the placement wall of the open box body;

[0009] A plurality of compression springs, wherein the lower end of each compression spring is sleeved on one of the mounting protrusions;

[0010] A support plate mounted on the upper ends of the plurality of compression springs; and

[0011] An air pump is installed on the upper side of the support plate; an air inlet of the air pump is connected to the atmosphere-adjusting membrane assembly.

[0012] Optionally, each of the compression springs is in a compressed state.

[0013] Optionally, the vacuum pump assembly further comprises:

[0014] Two vertical plates extending downward from both ends of the support plate; and

[0015] Two horizontal plates extend from the lower ends of the two vertical plates to the outer sides of the ends of the support plates; and

[0016] Each of the horizontal plates is provided with at least two mounting holes, and the upper end of each of the compression springs is provided at one of the mounting holes.

[0017] Optionally, the vacuum pump is spaced apart from the upper surface of the support plate.

[0018] Optionally, the vacuum pump is mounted on the support plate via two vertical plates.

[0019] Optionally, the two vertical plates are arranged in parallel and are respectively extended upward from two oppositely arranged edges of the support plate.

[0020] Optionally, the air pump box further comprises a box cover, which is arranged at the opening of the open box body; and a sealing gasket is arranged between the box cover and the open box body.

[0021] Optionally, the open box body is a first open box body, and the air pump box also includes a second open box body and a box cover, the first open box body is installed on the second open box body through four rubber pads, and the opening of the first open box body faces the bottom wall of the second open box body; the box cover is installed on the second open box body.

[0022] Optionally, the box body further comprises a first storage compartment; the atmosphere-controlled fresh-keeping space is arranged at the bottom of the first storage compartment;

[0023] The vacuum pump assembly is arranged at the rear of the atmosphere-controlled fresh-keeping space.

[0024] Optionally, the box body further comprises a first inner liner, the inner side of which defines the first storage compartment; the bottom of the rear wall of the first inner liner comprises a through hole for installation;

[0025] The opening of the open box body faces forward and is installed in the installation through hole; the outer side of the open box body is a foaming layer.

[0026] Optionally, the box body further comprises a second storage compartment, and the second storage compartment is arranged at the lower side of the first storage compartment;

[0027] The first storage compartment is a refrigerating compartment, and the second storage compartment is a freezing compartment.

[0028] Optionally, the box body further includes a storage container with a forward opening, and a drawer installed in the storage container; the drawer contains the atmosphere-controlled fresh-keeping space.

[0029] In the refrigeration and freezing device of the present invention, because there is an air pump box, and the air pump is installed on the air pump box through a special structure and is spaced apart from the air pump box, 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 structural diagram of an air extraction pump assembly in a refrigeration and freezing device according to an embodiment of the present invention;

[0036] Figure 5 yes Figure 4 A schematic diagram of the partial structure of the vacuum pump assembly shown. DETAILED DESCRIPTION

[0037] 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 5 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.

[0038] For example, the box body 20 also has 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, the box body 20 also includes a storage container 26 with a forward opening, and a drawer installed in the storage container 26. The space in the drawer is the above-mentioned atmosphere-controlled fresh-keeping space 25.

[0039] In particular, if Figure 5 As shown, the air pump assembly 30 may include an air pump box 31, a plurality of mounting protrusions, a plurality of compression springs 32, a support plate 33 and an air pump 34. The air pump box 31 is mounted on the housing 20, and the air pump box 31 has an open box body 311. The open box body 311 has a placement wall that is located at the lower side and extends in the horizontal direction. For example, if the opening of the open box body 311 faces forward or backward, then one side wall of the open box body 311 is the placement wall. Optionally, the placement wall may also be arranged in the open box body 311, and may be spaced apart from the box body wall of the open box body 311 that is arranged parallel to the placement wall. A plurality of mounting protrusions are arranged on the placement wall of the open box body 311. The lower end of each compression spring 32 is sleeved on a mounting protrusion. The support plate 33 is mounted on the upper end of the plurality of compression springs 32. The air pump 34 is mounted on the upper side of the support plate 33, and the air pump 34 is spaced apart from each wall of the open box body 311. The air inlet of the air pump 34 is connected to the gas-conditioning membrane assembly, which can reduce the vibration and noise of the air pump 34 when it is working, and improve the stability of the air pump 34 and the user experience.

[0040] The refrigeration and freezing device in the embodiment of the present invention has an air pump box 31, and the air pump 34 is installed on the air pump box 31 through a special structure, and is spaced apart from the air pump box 31, which significantly reduces the noise of the air pump 34 during its own operation, and reduces the outward propagation of the operating noise of the air pump 34, such as reducing the vibration of the air pump 34 transmitted to the box body 20, thereby reducing the noise of the atmosphere-controlled preservation process and the noise of the refrigeration and freezing device.

[0041] In some embodiments of the present invention, Figure 5 As shown, each compression spring 32 is in a compressed state. The vacuum pump assembly 30 also includes two vertical plates 331 and two horizontal plates 332. The two vertical plates 331 extend downward from both ends of the support plate 33. The two horizontal plates 332 extend from the lower ends of the two vertical plates 331 to the outer side of the end of the support plate 33. Each horizontal plate 332 is provided with at least two mounting holes, and the upper end of each compression spring 32 is arranged in one mounting hole. Specifically, there are four mounting protrusions and compression springs 32, which are respectively arranged at both ends of the two horizontal plates 332 to be arranged at the outer side of the four corners of the support plate 33. The open box body 311 can be a plastic box. The mounting protrusions arranged on the open box body 311 are used for positioning. The vacuum pump 34 is positioned in the up and down directions by the weight of the vacuum pump 34 itself, the mounting protrusions and the compression springs 32. The vacuum pump is only in contact with the open box body 311 through four compression springs 32. There are gaps all around, which is conducive to preventing vibration transmission.

[0042] In some embodiments of the present invention, Figure 5 As shown, the air pump 34 is spaced apart from the upper surface of the support plate 33. For example, the air pump 34 is mounted on the support plate 33 through two vertical plates 35. Further, the two vertical plates 35 are arranged in parallel and extend upward from two oppositely arranged edges of the support plate 33. The support plate 33, the two vertical plates 331, the two horizontal plates 332 and the vertical plates 35 are integrally formed and can be sheet metal parts. The two vertical plates 35 are spaced apart from the box body wall of the air pump box 31.

[0043] In order to further reduce noise, the air pump box 31 also includes a box cover 312, which is arranged at the opening of the open box body 311. A sealing gasket is arranged between the box cover 312 and the open box body 311. It is used to close the open box body 311, so that the air pump 34 is in a closed environment, and the noise generated when the air pump 34 is working is reduced. In some optional embodiments, the open box body is a first open box body, and the air pump box also includes a second open box body and a box cover, the first open box body is installed on the second open box body through four rubber pads, and the opening of the first open box body faces the bottom wall of the second open box body. The box cover is installed on the second open box body. In some embodiments of the present invention, a box cover is also arranged at the opening of the first open box body.

[0044] 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 open box body 311 faces forward and is installed in the through hole 211 for installation. The outer side of the open box body 311 is a foaming layer. During installation, the open box body 311 can be first installed at the through hole 211 for installation, and then foaming is performed to form a pre-embedded box. The open box body 311 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 34 by utilizing the sound insulation effect of the open box body 311 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 back 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.

[0045] Furthermore, the upper box wall of the open box body 311 is provided with an opening for installing a power supply 36 of the air pump 34 , and the power supply 36 is used to provide electrical energy to the air pump 34 .

[0046] In some embodiments of the present invention, the rear central area of ​​the first inner tank 21 is recessed backwards to form an air duct for the refrigeration and freezing device. The opening box body 311 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 opening box body 311 will not occupy the storage space and air duct position of the refrigeration and freezing device to achieve full utilization of the space.

[0047] In some embodiments of the present invention, an air extraction connection part connecting the inside and outside of the open box body 311 is provided on the box wall of the open box body 311, and one end of the air extraction connection part located inside the open box body 311 is connected to the air extraction port of the air extraction pump 34, and the refrigeration and freezing device further includes an air extraction pipe 37, a first end of which is connected to one end of the air extraction connection part located outside the open box body 311, 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 air extraction pipe 37 is penetrated in the foaming layer to reduce the noise of the air extraction process by using the sound insulation effect of the foaming layer.

[0048] An exhaust connection portion connecting the inside and outside of the open box body 311 is also provided on the box wall of the open box body 311, and one end of the exhaust connection portion located inside the open box body 311 is connected to the exhaust port of the vacuum pump 34, 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 open box body 311, 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.

[0049] 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.

[0050] In this embodiment, the suction pipe 37 and the exhaust pipe 38 of the vacuum pump 34 located outside the open box body 311 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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 refrigerator main control board or a controller of other refrigerators, and is used to adjust the working state of the ion generating device according to the operating conditions of the refrigerator), 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.

[0055] 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.

[0056] 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, 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; characterized in that: The air pump assembly comprises: An air pump box, the air pump box is installed on the box body, and the air pump box has an open box body; the open box body has a placement wall extending in the horizontal direction; A plurality of mounting protrusions are arranged on the placement wall of the open box body; A plurality of compression springs, wherein the lower end of each compression spring is sleeved on one of the mounting protrusions; A support plate mounted on the upper ends of the plurality of compression springs; and An air pump is installed on the upper side of the support plate; an air inlet of the air pump is connected to the atmosphere-controlled membrane assembly; The box body further comprises a containing cavity, which is communicated with the atmosphere-controlled fresh-keeping space; the atmosphere-controlled membrane assembly is arranged in the containing cavity; The refrigeration and freezing device also includes an ion generator and a fan. The ion generator 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 controlled atmosphere preservation space; a first ventilation structure and a second ventilation structure are provided between the accommodating chamber and the controlled atmosphere preservation space to connect the accommodating chamber and the controlled atmosphere preservation space at different positions respectively; the fan is configured to cause the gas in the controlled atmosphere preservation space to return to the controlled atmosphere preservation space via the first ventilation structure, the accommodating chamber and the second ventilation structure in sequence; a guide air duct is provided between the fan and the controlled atmosphere membrane assembly.

2. The refrigeration and freezing device according to claim 1, characterized in that: Each of the compression springs is in a compressed state.

3. The refrigeration and freezing device according to claim 1, characterized in that: The air pump assembly also includes: Two vertical plates extending downward from both ends of the support plate; and Two horizontal plates extend from the lower ends of the two vertical plates to the outer sides of the ends of the support plates; and Each of the horizontal plates is provided with at least two mounting holes, and the upper end of each of the compression springs is provided at one of the mounting holes.

4. The refrigeration and freezing device according to claim 1, characterized in that: The air pump is spaced apart from the upper surface of the support plate.

5. The refrigerator-freezer according to claim 1, characterized in that: The air pump is installed on the support plate through two vertical plates.

6. The refrigerator-freezer according to claim 5, characterized in that: The two vertical plates are arranged in parallel and are respectively extended upward from two oppositely arranged edges of the support plate.

7. The refrigerator-freezer according to claim 1, characterized in that: The air pump box also includes a box cover, which is arranged at the opening of the open box body; and a sealing gasket is arranged between the box cover and the open box body.

8. The refrigerator-freezer according to claim 1, characterized in that: 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 vacuum pump assembly is arranged at the rear of the atmosphere-controlled fresh-keeping space.

9. The refrigerator-freezer according to claim 8, characterized in that: The box body also has a first inner liner, the inner side of which defines the first storage compartment; the bottom of the rear wall of the first inner liner has a through hole for installation; The opening of the open box body faces forward and is installed in the installation through hole; the outer side of the open box body is a foaming layer.

10. The refrigerator-freezer according to claim 8, characterized in that: The box body also has a second storage compartment, which is arranged at the lower side of the first storage compartment; The first storage compartment is a refrigerator, and the second storage compartment is a freezer; The box body also includes a storage container with a forward opening, and a drawer installed in the storage container; The drawer is the atmosphere-controlled fresh-keeping space.

Images