Vacuum fresh-keeping type refrigerator

Abstract

The utility model discloses a vacuum fresh-keeping type refrigerator which comprises a refrigerator body, a fresh-keeping area, a vacuum area and a freezing area are arranged in the refrigerator body, and a first refrigerator door, a second refrigerator door and a third refrigerator door which are used for sealing the fresh-keeping area, the vacuum area and the freezing area respectively are installed on the refrigerator body. A micro vacuum pump is installed on the inner side of the second box door, the input end of the micro vacuum pump is fixedly connected with a rotating connector through a hose, and a closing plate is hinged to the front face of the vacuum area. The electromagnetic iron ring is electrified to be adsorbed with the annular metal sheet, so that the vacuum area is well sealed by the closing plate, then the miniature vacuum pump is started to suck the interior of the vacuum area to form 0.7-0.8 pa simulated vacuum in the vacuum area, a low-temperature and low-oxygen environment is formed, the fresh-keeping time of food is effectively prolonged, and the fresh-keeping effect of the food is improved. Therefore, the device has the advantages that perishable food can be stored in a vacuum mode, low-temperature preservation is matched, preservation is more durable, and the effect is better.

Description

Technical Field

[0001] This utility model relates to the field of refrigerators, and more specifically, to a vacuum preservation refrigerator. Background Technology

[0002] A refrigerator is a household or commercial appliance that uses electricity or other energy sources to drive a refrigeration system to maintain a constant low temperature environment inside the refrigerator, thereby extending the shelf life of food, medicine and other items. Household refrigerators are now very common.

[0003] However, most refrigerators still rely on a single cooling effect for preservation. For certain perishable foods, the preservation effect of a single low-temperature environment is no longer sufficient to meet the daily needs of users. Therefore, we propose a vacuum preservation refrigerator. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a vacuum preservation refrigerator.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A vacuum preservation refrigerator includes a refrigerator body. The refrigerator body has a preservation zone, a vacuum zone, and a freezing zone inside. The refrigerator body is equipped with a first door, a second door, and a third door for sealing the preservation zone, the vacuum zone, and the freezing zone, respectively. A miniature vacuum pump is installed on the inside of the second door. The input end of the miniature vacuum pump is fixedly connected to a screw connector via a hose. A closing plate is hinged to the front of the vacuum zone. A connector that is threadedly connected to the screw connector is installed on the closing plate. An annular metal sheet and an annular sealing ring are installed on the inside of the closing plate. An electromagnet ring for attracting the annular metal sheet is fixedly installed at the front port of the vacuum zone. The refrigerator body is equipped with a controller for coordinating the operation of the miniature vacuum pump and the electromagnet ring.

[0007] As a further description of the above technical solution: a mechanical pressure relief valve is installed on the closing plate.

[0008] As a further description of the above technical solution: the connector is provided with a one-way valve inside, which allows airflow to flow from the inside of the vacuum zone to the outside.

[0009] As a further description of the above technical solution: the front port of the vacuum zone is provided with an annular sealing groove that mates with the annular sealing ring.

[0010] As a further description of the above technical solution: a pressure sensor is fixedly installed on the inner side of the closed plate, and the pressure sensor transmits real-time data to the controller.

[0011] As a further description of the above technical solution: the outer side of the micro vacuum pump is wrapped with a heat insulation shell.

[0012] Compared with existing technologies, the advantages of this utility model are:

[0013] This solution uses a miniature vacuum pump to create a vacuum zone, forming an internal low-temperature, low-pressure, and low-oxygen environment. This allows the device to vacuum store perishable foods, combined with low-temperature preservation, resulting in longer-lasting and more effective preservation. Attached Figure Description

[0014] Figure 1 This is a front view structural diagram of the present utility model;

[0015] Figure 2 for Figure 1 Enlarged schematic diagram of section A in the middle;

[0016] Figure 3 This is a partial top view cross-sectional structural diagram of the present invention;

[0017] Figure 4 This is a partial three-dimensional structural diagram of the present invention.

[0018] Explanation of the labels in the diagram:

[0019] 1. Refrigerator body; 2. Fresh-keeping compartment; 3. Vacuum compartment; 31. Annular sealing groove; 4. Freezer compartment; 5. First door; 6. Second door; 7. Third door; 8. Miniature vacuum pump; 81. Insulation shell; 9. Hose; 10. Swivel joint; 11. Closing plate; 111. Mechanical pressure relief valve; 112. Pressure sensor; 12. Connector; 121. One-way valve; 13. Annular metal sheet; 14. Annular sealing ring; 15. Electromagnetic ring; 16. Controller. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model;

[0021] Please see Figures 1-4In this utility model, a vacuum preservation refrigerator includes a refrigerator body 1. The refrigerator body 1 has a preservation zone 2, a vacuum zone 3, and a freezing zone 4 inside. The refrigerator body 1 is equipped with a first door 5, a second door 6, and a third door 7 for sealing the preservation zone 2, the vacuum zone 3, and the freezing zone 4, respectively. A micro vacuum pump 8 is installed on the inner side of the second door 6. The input end of the micro vacuum pump 8 is fixedly connected to a screw connector 10 through a hose 9. A closing plate 11 is hinged to the front of the vacuum zone 3. A connector 12 that is threadedly connected to the screw connector 10 is installed on the closing plate 11. An annular metal sheet 13 and an annular sealing ring 14 are installed on the inner side of the closing plate 11. An electromagnet ring 15 for adsorbing the annular metal sheet 13 is fixedly installed at the front port of the vacuum zone 3. The refrigerator body 1 is equipped with a controller 16 for coordinating the operation of the micro vacuum pump 8 and the electromagnet ring 15.

[0022] In this invention, the refrigerator body 1 serves as the main body of the device, and the controller 16 is integrated into the overall control panel of the refrigerator body 1 for convenient operation. When the vacuum zone 3 is needed, the closing plate 11 is opened first, and then the food to be vacuum frozen is placed inside the vacuum zone 3. Then, the closing plate 11 is closed to seal the vacuum zone 3. Then, the electromagnet ring 15 is energized to attract the annular metal sheet 13, achieving a good seal of the vacuum zone 3 by the closing plate 11. Then, the micro vacuum pump 8 is started to evacuate the interior of the vacuum zone 3 to create a simulated vacuum of 0.7-0.8 Pa, forming a low-temperature and low-oxygen environment, which effectively extends the preservation time of food. Thus, the device has the advantages of vacuum storage of perishable food, combined with low-temperature preservation, resulting in longer-lasting and better preservation. This solves the problem that most refrigerators in the current technology still use a single cooling effect for preservation, and for specific perishable foods, the preservation effect of a single low-temperature environment preservation function can no longer meet the daily needs of users.

[0023] Please see Figure 2 Among them, a mechanical pressure relief valve 111 is installed on the closing plate 11.

[0024] In this invention, external air is allowed to enter by pressing the mechanical pressure relief valve 111 with the hand, which balances the air pressure inside the vacuum zone 3 and makes it easier to open the closing plate 11.

[0025] Please see Figure 3 and Figure 4 The connector 12 is equipped with a one-way valve 121, which allows airflow to flow from the inside of the vacuum zone 3 to the outside.

[0026] In this invention, the one-way valve 121 ensures that even when the micro vacuum pump 8 is not powered on, the vacuum zone 3 can maintain a negative pressure state for an extended period, thus prolonging the preservation effect.

[0027] Please see Figure 3 and Figure 4 The front port of the vacuum zone 3 is provided with an annular sealing groove 31 that mates with the annular sealing ring 14.

[0028] In this invention, the annular sealing ring 14, in conjunction with the annular sealing groove 31, improves the sealing effect of the closing plate 11 on the vacuum zone 3, thereby enhancing the airtightness of the vacuum zone 3 after closure.

[0029] Please see Figure 1 Among them, a pressure sensor 112 is fixedly installed on the inner side of the closed plate 11, and the pressure sensor 112 transmits real-time data to the controller 16.

[0030] In this invention, the air pressure sensor 112 detects the air pressure data inside the vacuum zone 3 in real time. When the air pressure reaches the set value, the controller 16 controls the micro vacuum pump 8 to stop working; otherwise, the micro vacuum pump 8 is started to run, maintaining the vacuum zone 3 within a certain negative pressure range while achieving energy saving.

[0031] Please see Figure 2 Among them, the micro vacuum pump 8 is surrounded by a heat insulation shell 81.

[0032] In this invention, the micro vacuum pump 8 is insulated by the heat insulation shell 81 to prevent it from damaging the internal low-temperature environment during operation.

[0033] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A vacuum-sealed refrigerator, comprising a refrigerator body (1), wherein the refrigerator body (1) is provided with a fresh-keeping zone (2), a vacuum zone (3), and a freezing zone (4), and wherein the refrigerator body (1) is provided with a first door (5), a second door (6), and a third door (7) for sealing the fresh-keeping zone (2), the vacuum zone (3), and the freezing zone (4), respectively, characterized in that: A miniature vacuum pump (8) is installed on the inside of the second door (6). The input end of the miniature vacuum pump (8) is fixedly connected to a screw connector (10) via a hose (9). A closing plate (11) is hinged to the front of the vacuum zone (3). A connector (12) that is threadedly connected to the screw connector (10) is installed on the closing plate (11). An annular metal sheet (13) and an annular sealing ring (14) are installed on the inside of the closing plate (11). An electromagnet ring (15) for adsorbing the annular metal sheet (13) is fixedly installed at the front port of the vacuum zone (3). A controller (16) for coordinating the operation of the miniature vacuum pump (8) and the electromagnet ring (15) is provided on the refrigerator body (1).

2. The vacuum preservation refrigerator according to claim 1, characterized in that: A mechanical pressure relief valve (111) is installed on the closing plate (11).

3. A vacuum preservation refrigerator according to claim 1, characterized in that: The connector (12) is equipped with a one-way valve (121) inside, which allows airflow to flow from the inside of the vacuum zone (3) to the outside.

4. A vacuum preservation refrigerator according to claim 1, characterized in that: The front port of the vacuum zone (3) is provided with an annular sealing groove (31) that mates with the annular sealing ring (14).

5. A vacuum preservation refrigerator according to claim 1, characterized in that: A pressure sensor (112) is fixedly installed on the inner side of the closed plate (11), and the pressure sensor (112) transmits real-time data to the controller (16).

6. A vacuum preservation refrigerator according to claim 1, characterized in that: The micro vacuum pump (8) is surrounded by a heat insulation shell (81).

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