Refrigeration equipment

Abstract

The utility model discloses refrigeration equipment which comprises a fresh-keeping chamber, a fresh-keeping integrated module and a suction device. A fresh-keeping space for storing food materials is formed in the fresh-keeping chamber; the fresh-keeping integrated module is arranged on the fresh-keeping chamber and comprises a packaging shell, an oxygen control film and a nitrogen control film, the oxygen control film and the nitrogen control film are fixed to the packaging shell, and the fresh-keeping chamber communicates with the outside through the oxygen control film and the nitrogen control film. The suction device communicates with the oxygen control film and is used for collecting oxygen passing through the oxygen control film and discharging the oxygen to the outside of the fresh-keeping chamber. According to the fresh-keeping device, the oxygen content in the fresh-keeping space is effectively reduced, the concentration of nitrogen is improved, a low-oxygen and high-nitrogen gas atmosphere is formed, and the fresh-keeping effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration equipment technology, and in particular to a refrigeration device. Background Technology

[0002] With the improvement of people's living standards and purchasing power, the requirements for food preservation are also getting higher and higher. Modified atmosphere storage technology is a widely used technology in the field of fruit and vegetable preservation. By controlling various gas environment parameters in the storage environment, it inhibits the respiration of fruits and vegetables, slows down the metabolic process, puts fruits and vegetables in a dormant state, prevents them from rotting and spoiling, and extends their storage period.

[0003] The primary method of controlled atmosphere storage is to reduce oxygen concentration. Current technology uses oxygen-controlled membranes and vacuum pumps to achieve this. However, using deoxygenation devices to extract oxygen from the crisper compartment and reduce its oxygen concentration leads to a decrease in pressure within the crisper space. Under the influence of the pressure difference between the inside and outside, the sealing performance of the suction device and the refrigerator is crucial. Air from outside the crisper space can enter through the controlled atmosphere membrane, causing the oxygen concentration in the crisper space to drop to a certain level. Even if the suction device continues to work, it will be difficult to further reduce the oxygen level. Moreover, a large amount of fresh air rushes in every time an item is placed or removed, and extracting fresh air or oxygen from the crisper compartment to create a low-oxygen environment requires a lot of energy, resulting in low efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a refrigeration device that can effectively reduce the oxygen in the preservation space and improve the preservation effect.

[0005] To achieve the above objectives, this utility model provides a refrigeration device, comprising:

[0006] A fresh-keeping compartment, which forms a space for storing food ingredients;

[0007] A preservation integrated module is disposed on the preservation chamber, including a packaging shell and an oxygen control membrane and a nitrogen control membrane fixed on the packaging shell, and the preservation chamber is connected to the outside through the oxygen control membrane and the nitrogen control membrane.

[0008] And a suction device, which is connected to the oxygen control membrane, for collecting oxygen passing through the oxygen control membrane and discharging it to the outside of the preservation chamber.

[0009] In one embodiment of this utility model, the suction device includes a suction pipe, a vacuum pump, and an exhaust pipe connected in sequence. The suction pipe is connected to the oxygen control membrane, and the exhaust pipe is connected to the outside atmosphere.

[0010] In one embodiment of this utility model, the preservation integrated module is further provided with a circulating fan, which includes an air inlet facing the interior of the preservation chamber and an air outlet facing the oxygen control membrane.

[0011] In one embodiment of this utility model, the circulating fan is disposed on one edge of the preservation integrated module, and the nitrogen control membrane is disposed on the side close to the circulating fan.

[0012] In one embodiment of this utility model, the oxygen-controlling membrane is disposed on the side of the preservation integrated module opposite to the circulating fan, and is arranged in a triangular pattern with the circulating fan and the nitrogen-controlling membrane.

[0013] In one embodiment of this utility model, the preservation chamber has a docking window for cooperating with the preservation integrated module, and the encapsulation shell is fixed on the preservation chamber and cooperates to seal the docking window.

[0014] In one embodiment of this utility model, the encapsulation shell has an air inlet hole that extends through the thickness direction, and the nitrogen control film is sealed in the air inlet hole of the encapsulation shell.

[0015] In one embodiment of this utility model, the four corners of the oxygen control membrane are fixed to the side of the packaging shell facing the preservation chamber, and a gap is formed between the middle part of the oxygen control membrane and the packaging shell.

[0016] In one embodiment of this utility model, the vacuum pump is disposed on the preservation chamber or in the area outside the preservation chamber in the refrigeration equipment, and a shock-absorbing layer is provided on the outside of the vacuum pump.

[0017] As one embodiment of this utility model, the preservation chamber is further provided with a gas-blocking vaporization permeation membrane that separates the preservation space from the outside of the preservation chamber. The gas-blocking vaporization permeation membrane allows water vapor in the air to pass through and can block other gases from passing through, so as to maintain the humidity in the preservation space.

[0018] The beneficial effects of this utility model are as follows: According to the refrigeration equipment provided by this utility model, the fresh-keeping chamber is connected to the outside through the oxygen-controlling membrane and nitrogen-controlling membrane set in the fresh-keeping integrated module. The suction device discharges the oxygen passing through the oxygen-controlling membrane to the outside of the fresh-keeping chamber. At the same time, under atmospheric pressure, a large amount of nitrogen enters the fresh-keeping chamber through the nitrogen-controlling membrane, forming a pressure-balanced and low-oxygen, high-nitrogen gas atmosphere, which effectively improves the freshness of food and extends the freshness time of food. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the fresh-keeping compartment in the refrigeration equipment according to an embodiment of this utility model;

[0020] Figure 2This is a three-dimensional schematic diagram showing the connection between the fresh-keeping compartment, the integrated fresh-keeping module, and the suction device in the refrigeration equipment of this utility model embodiment;

[0021] Figure 3 yes Figure 2 Top view of the connection between the central preservation compartment, the integrated preservation module, and the suction device;

[0022] Figure 4 yes Figure 2 A three-dimensional schematic diagram showing the connection between the integrated cold preservation module, the cold preservation chamber, and the suction device after the outer casing of the module has been removed.

[0023] Figure 5 yes Figure 4 Top view of the integrated cold preservation module after its outer casing has been removed, showing its connection to the cold preservation chamber and suction device.

[0024] Figure 6 This is a three-dimensional structural diagram of the integrated food preservation module;

[0025] Figure 7 This is a schematic diagram of the planar structure of the integrated preservation module facing the preservation compartment;

[0026] Figure 8 yes Figure 1 Schematic diagram of the rear side of the central crisper compartment; Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] It should be understood that, unless otherwise expressly specified and limited, in this application, the terms “up,” “down,” “front,” “back,” “left,” “right,” etc., indicate the orientation or positional relationship based on the user’s facing side of the door of the device being in front, and are used only for ease of description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed or operated in a specific orientation.

[0029] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, at least two.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "set", "connect", "connect", "fixed" and other such terms should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part.

[0031] This utility model provides a refrigeration device. Figures 1 to 8 An embodiment according to the present invention is shown.

[0032] In this embodiment, the refrigeration device is a refrigerator. It should be noted that although this utility model is described using a refrigerator as an example, it is not limited to this and can also be other devices that can provide refrigeration function.

[0033] Typical refrigeration equipment defines a storage room with storage space through a cabinet and doors. This storage room is divided into different functional compartments, such as a refrigerator compartment, a freezer compartment, and a fresh-keeping compartment. Figure 1 As shown, the refrigeration equipment of this utility model embodiment includes a fresh-keeping compartment 1, a fresh-keeping integrated module 2, and a suction device 3;

[0034] The preservation chamber 1 forms a preservation space for storing food. In this embodiment, the preservation chamber 1 includes an inner liner 11 and a pull-out sealed drawer 12. The inner liner 11 is formed as a box with an opening. The sealed drawer 12 extends into the inner liner 11 and closes the opening of the inner liner 11, so that the inner liner 11 and the sealed drawer 12 cooperate to form a preservation space that is relatively isolated from the outside air.

[0035] Reference Figures 2 to 4 The preservation integrated module 2 is disposed on the preservation chamber 1, including a packaging shell 21 and an oxygen control membrane 22 and a nitrogen control membrane 23 fixed on the packaging shell 21. The preservation chamber 1 is connected to the outside through the oxygen control membrane 22 and the nitrogen control membrane 23. The suction device 3 is connected to the oxygen control membrane 22 to collect oxygen passing through the oxygen control membrane 22 and discharge it to the outside of the preservation chamber 1.

[0036] In this embodiment, the oxygen control membrane 22 and the nitrogen control membrane 23 separate the preservation space from the outside of the preservation chamber 1. On the oxygen control membrane 22, the oxygen permeability is much greater than the nitrogen permeability. Therefore, the oxygen control membrane 22 allows a large amount of oxygen to pass through the preservation space and can block most of the nitrogen in the gas in the preservation space. The oxygen control membrane 22 can be used to separate the oxygen in the preservation space.

[0037] The suction device 3 is directly connected to the oxygen control membrane 22, and can collect the oxygen separated by the oxygen control membrane 22 and discharge it outside the preservation space. This causes a large amount of oxygen in the preservation chamber 1 to be discharged, forming a low-oxygen environment that is conducive to food preservation.

[0038] On the nitrogen control membrane 23, the nitrogen permeability is much greater than the oxygen permeability. Therefore, the nitrogen control membrane 23 allows a large amount of nitrogen from the air to enter the preservation space, while oxygen is blocked outside the nitrogen control membrane 23. The nitrogen control membrane 23 is used to separate nitrogen from the air outside the preservation chamber 1 and allow it to enter the preservation space. This further increases the nitrogen concentration in the preservation chamber 1, forming a low-oxygen, high-nitrogen gas atmosphere, which helps to extend the preservation time of food.

[0039] In this embodiment, the nitrogen control membrane 23 is a polymer membrane capable of high-throughput separation of oxygen and nitrogen.

[0040] Specifically, the suction device 3 includes a suction pipe 31, a vacuum pump 32, and an exhaust pipe 33 connected in sequence. The suction pipe 31 is connected to the oxygen control membrane 22, and the exhaust pipe 33 is connected to the outside atmosphere.

[0041] In this embodiment, the vacuum pump 32 and the oxygen control membrane 22 are connected via an extraction pipe 31. When the vacuum pump 32 starts working, it draws air outward through the extraction pipe 31, creating a negative pressure on the surface of the oxygen control membrane 22. Under this negative pressure, the air in the preservation chamber 1 continuously passes through the oxygen control membrane 22 into the vacuum pump 32, and is then discharged to the outside of the preservation chamber 1 through the exhaust pipe 33 of the vacuum pump 32. When air passes through the oxygen control membrane 22, due to the difference in the permeation rates of nitrogen and oxygen on the membrane 22, oxygen permeates faster, thus a large amount of oxygen is discharged from the preservation chamber 1, creating a low-oxygen environment.

[0042] Due to atmospheric pressure, air will return from the nitrogen control membrane 23 into the preservation chamber 1. As a result of the nitrogen control membrane 23, a large amount of nitrogen in the air enters the preservation chamber 1, while oxygen is blocked outside the nitrogen control membrane 23, thus further increasing the nitrogen concentration in the preservation chamber 1.

[0043] As oxygen is continuously removed from the freshness compartment 1, nitrogen from the outside air continuously enters the freshness compartment 1. The oxygen content in the freshness space continuously decreases, while the nitrogen content continuously increases. Until the freshness compartment 1 forms a low-oxygen, high-nitrogen gas atmosphere, the vacuum pump 32 stops operating, and the pressure inside and outside the freshness compartment 1 is balanced. The freshness space will always maintain a low-oxygen, high-nitrogen environment suitable for food storage.

[0044] In this embodiment, the preservation integration module 2 is located at the top of the preservation chamber 1. Of course, in other embodiments, the preservation integration module 2 can also be located on any other plane of the preservation chamber 1, such as the rear, bottom or side wall of the preservation chamber 1.

[0045] The vacuum pump 32 is disposed on the preservation chamber 1, or in an area outside the preservation chamber 1 in the refrigeration equipment, and a shock-absorbing layer is provided on the outside of the vacuum pump 32. In this embodiment, the vacuum pump 32 is disposed at the rear of the preservation chamber 1, close to the oxygen control membrane 22 of the preservation integrated module 2, which saves the extension distance of the suction pipe 31 between the oxygen control membrane 22 and the vacuum pump 32 and improves the suction efficiency.

[0046] Of course, in some other embodiments, the vacuum pump 32 may also be located in the area outside the preservation chamber 1 of the refrigeration equipment, such as fixing the vacuum pump 32 in other storage chambers or the inner liner of the refrigeration equipment.

[0047] The vacuum pump 32 is provided with a shock-absorbing layer on its outer side to reduce the impact of the vacuum pump 32 on other components when it is working. The shock-absorbing layer is made of shock-absorbing material, such as rubber pads.

[0048] The preservation chamber 1 has a docking window 13 for use with the preservation integrated module 2, and the encapsulation shell 21 is fixed to the preservation chamber 1 and cooperates to seal the docking window 13.

[0049] like Figure 4 and Figure 5 As shown, in this embodiment, the docking window 13 includes a plurality of spaced air vents 131 arranged in a uniform array. The encapsulation shell 21 is fixed to the top of the preservation chamber 1 and covers the docking window 13. A cavity is formed between the encapsulation shell 21 and the docking window 13. The oxygen control membrane 22 is fixed to the side of the encapsulation shell 21 facing the preservation chamber 1 and is built into the cavity.

[0050] The air in the preservation chamber 1 can enter the cavity through the multiple air windows 131. The oxygen control membrane 22 separates the oxygen therein and discharges it to the inside and outside of the preservation chamber 1 through the suction device 3, thereby reducing the oxygen in the preservation chamber 1.

[0051] Furthermore, the preservation integrated module 2 of this utility model has a simple structure and is highly integrated. The oxygen control membrane 22 and the nitrogen control membrane 23 are both pre-fixed on the encapsulation shell 21. During installation, it is only necessary to fix the encapsulation shell 21 of the preservation integrated module 2 to the preservation chamber 1 to reduce oxygen and increase nitrogen in the preservation chamber 1, thereby achieving the preservation effect.

[0052] Reference Figure 6 and Figure 7 The preservation integrated module 2 is also provided with a circulating fan 24, which includes an air inlet 241 facing the interior of the preservation chamber 1 and an air outlet 242 facing the oxygen control membrane 22.

[0053] When the circulating fan 24 is working, the surrounding airflow flows at high speed, causing the air pressure inside the preservation integrated module 2 to be lower than the pressure inside the preservation chamber 1. This creates a negative pressure at the docking window 13 of the preservation chamber 1. Under the action of the negative pressure, the air inside the preservation chamber 1 continuously flows into the air inlet 241 and is discharged to the oxygen control membrane 22 through the air outlet 242 facing the oxygen control membrane 22. This accelerates the filtration of the air inside the preservation chamber 1 by the oxygen control membrane 22, removes oxygen from the preservation chamber 1, improves the oxygen reduction efficiency, and also helps to increase the suction pressure of the vacuum pump 32, thereby reducing the power consumption of the vacuum pump 32.

[0054] Meanwhile, the circulating fan 24 can enhance the internal air circulation and convection, making the nitrogen and oxygen content in the preservation space more evenly distributed, thereby achieving a better preservation effect on the food in the preservation space.

[0055] The circulating fan 24 is located on one edge of the preservation integrated module 2, and the nitrogen control membrane 23 is located on the side close to the circulating fan 24. The oxygen control membrane 22 is located on the side of the preservation integrated module 2 opposite to the circulating fan 24, and is arranged in a triangular pattern with the circulating fan 24 and the nitrogen control membrane 23.

[0056] The circulating fan 24 is located at the edge of the preservation integrated module 2, so that the circulating fan 24 can guide the air in the preservation chamber 1 to most of the area in the preservation integrated module 2, and the size of the oxygen control membrane 22 can be set as large as possible to separate oxygen faster and have higher working efficiency.

[0057] The nitrogen control membrane 23 is located on the side close to the circulating fan 24. When the circulating fan 24 is working, the air pressure around it is lower than the pressure of the outside atmosphere. Under this pressure difference, the outside nitrogen gas can be more easily introduced into the preservation chamber 1 through the air inlet 211.

[0058] The oxygen-controlling membrane 22 is located on the opposite side of the circulating fan 24, and is arranged in a triangular pattern with the circulating fan 24 and the nitrogen-controlling membrane 23, which makes more effective use of the space within the preservation integrated module 2 and maximizes the working efficiency.

[0059] The encapsulation shell 21 has an air inlet 211 that extends through the thickness direction, and the nitrogen control film 23 is sealed in the air inlet 211 of the encapsulation shell 21.

[0060] In this embodiment, the air inlet 211 is formed by connecting two parts facing the outside of the preservation chamber 1 and facing the inside of the preservation chamber 1. The nitrogen control membrane 23 is sandwiched between the two parts of the air inlet 211 to seal the air inlet 211, allowing only a large amount of nitrogen in the air to enter the preservation space.

[0061] The four corners of the oxygen-controlling membrane 22 are fixed to the side of the packaging shell 21 facing the preservation chamber 1, and a gap is formed between the middle part of the oxygen-controlling membrane 22 and the packaging shell 21. When the circulating fan 24 is working, the gap will be further widened, and more air can come into contact with the upper and lower sides of the oxygen-controlling membrane 22, which helps to expand the working area, separate oxygen faster, and increase working efficiency.

[0062] In addition, such as Figure 8 As shown, the preservation chamber 1 is also provided with a gas-blocking vaporization permeation membrane 4 that separates the preservation space from the outside of the preservation chamber 1. The gas-blocking vaporization permeation membrane 4 allows water vapor in the air to pass through and can block other gases from passing through, so as to maintain the humidity in the preservation space.

[0063] In this embodiment, the vapor-barrier permeable membrane 4 is made of a polymer material. When the ambient humidity is greater than 90% RH, it will expel excess water vapor and is only permeable to water vapor, not air, thus maintaining a high-humidity environment without condensation inside the preservation compartment 1. At this time, the food in the preservation compartment 1 can reduce water loss and will not condense and spoil.

[0064] In this embodiment, the gas-blocking vaporization permeation membrane 4 is disposed at the rear of the preservation chamber 1. Of course, in some other embodiments, the gas-blocking vaporization permeation membrane 4 can also be disposed on any other plane of the preservation chamber 1, such as the top or side wall of the preservation chamber 1.

[0065] In summary, using the refrigeration equipment provided by this utility model, the fresh-keeping chamber is connected to the outside through the oxygen-controlling membrane and nitrogen-controlling membrane set in the fresh-keeping integrated module. The suction device discharges the oxygen passing through the oxygen-controlling membrane to the outside of the fresh-keeping chamber, while at atmospheric pressure, a large amount of nitrogen enters the fresh-keeping chamber through the nitrogen-controlling membrane, forming a pressure-balanced, low-oxygen, high-nitrogen gas atmosphere, which effectively improves the freshness of food and extends the freshness time of food.

[0066] In the embodiments provided by this utility model, it should be understood that the above-described implementation of the structure is merely illustrative. For example, the division of the modules is merely a logical functional division. In actual implementation, there may be other division methods. For example, multiple modules or components may be combined or integrated into another device, or some features may be ignored or not executed.

[0067] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A refrigeration device, characterized in that, include: A fresh-keeping compartment, which forms a space for storing food ingredients; A preservation integrated module is disposed on the preservation chamber, including a packaging shell and an oxygen control membrane and a nitrogen control membrane fixed on the packaging shell, and the preservation chamber is connected to the outside through the oxygen control membrane and the nitrogen control membrane. And a suction device, which is connected to the oxygen control membrane, for collecting oxygen passing through the oxygen control membrane and discharging it to the outside of the preservation chamber.

2. The refrigeration equipment according to claim 1, characterized in that, The suction device includes a suction pipe, a vacuum pump, and an exhaust pipe connected in sequence. The suction pipe is connected to the oxygen control membrane, and the exhaust pipe is connected to the outside atmosphere.

3. The refrigeration equipment according to claim 1, characterized in that, The preservation integrated module is also equipped with a circulating fan, which includes an air inlet facing the interior of the preservation chamber and an air outlet facing the oxygen control membrane.

4. The refrigeration equipment according to claim 3, characterized in that, The circulating fan is located on one edge of the preservation integrated module, and the nitrogen control membrane is located on the side close to the circulating fan.

5. The refrigeration equipment according to claim 4, characterized in that, The oxygen-controlled membrane is positioned on the side of the preservation integrated module opposite to the circulating fan, and is arranged in a triangular pattern with the circulating fan and the nitrogen-controlled membrane.

6. The refrigeration equipment according to claim 1, characterized in that, The preservation chamber has a docking window for use with the preservation integrated module, and the encapsulation shell is fixed to the preservation chamber and cooperates to seal the docking window.

7. The refrigeration equipment according to claim 6, characterized in that, The encapsulation shell has an air inlet hole that extends through the thickness direction, and the nitrogen control membrane is sealed in the air inlet hole of the encapsulation shell.

8. The refrigeration equipment according to claim 6, characterized in that, The four corners of the oxygen-controlling membrane are fixed to the side of the packaging shell facing the preservation chamber, and a gap is formed between the middle part of the oxygen-controlling membrane and the packaging shell.

9. The refrigeration equipment according to claim 2, characterized in that, The vacuum pump is installed on the preservation chamber, or in the area outside the preservation chamber in the refrigeration equipment, and a shock-absorbing layer is provided on the outside of the vacuum pump.

10. The refrigeration equipment according to claim 1, characterized in that, The preservation chamber is also provided with a gas-barrier vaporization permeation membrane that separates the preservation space from the outside of the preservation chamber. The gas-barrier vaporization permeation membrane allows water vapor in the air to pass through, but blocks other gases from passing through, in order to maintain the humidity in the preservation space.

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