Refrigeration equipment with oxygen generation function

Abstract

The utility model discloses refrigeration equipment with an oxygen generation function. The refrigeration equipment comprises a refrigeration cavity, a refrigeration device, a first gas storage box, a nitrogen separator and an oxygen separator. The refrigerating device is used for cooling the refrigerating chamber; the first gas storage box is connected with the refrigeration cavity and used for storing gas input into the refrigeration cavity. The nitrogen separator is connected with the first gas storage box, and the oxygen separator is connected with the first gas storage box; an output port of the nitrogen separator is connected with the refrigeration chamber and used for filling the refrigeration chamber with nitrogen, and an output port of the oxygen separator is used for being connected with an oxygen supply device. After the nitrogen separator carries out nitrogen separation preparation and purification, nitrogen is input into the refrigeration chamber, meanwhile, air containing enriched oxygen after passing through the nitrogen separator is input into the oxygen separator again to carry out oxygen separation preparation and purification, oxygen can be supplied to the outside, and in other words, the refrigeration equipment can carry out modified atmosphere preservation, and the refrigeration efficiency is improved. And an oxygen generation function is also realized.

Description

Technical Field

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

[0002] Currently, household refrigeration equipment typically preserves food by controlling temperature. However, for fruits and similar items with high respiration rates, existing refrigeration equipment has limited effectiveness, requiring better solutions. The food industry uses modified atmosphere packaging (MAP) for preserving fruits and other foods, primarily by replacing the air in the refrigerated space with nitrogen. This nitrogen is usually obtained through air separation using molecular sieves. The current molecular sieve air separation method involves compressing pure air (removing moisture and dust) and passing it through a nitrogen molecular sieve (3Ӑ). Through repeated pressure swing adsorption, nitrogen is produced, and the oxygen enriched outside the molecular sieve is typically released directly into the air as a byproduct. A household oxygen concentrator is a device that separates high-concentration oxygen from the air, suitable for medical and healthcare applications, high-altitude hypoxic environments, and daily health needs. It uses molecular sieve technology to adsorb nitrogen, outputting high-purity oxygen at 93% ± 3%.

[0003] When exploring high altitudes or traveling long distances, the thin air at high altitudes may necessitate carrying an oxygen concentrator to assist breathing and cope with potential oxygen deficiency. Additionally, refrigeration equipment may be needed to preserve food and medication. This requires both an oxygen concentrator and refrigeration equipment, which is inconvenient to carry. Utility Model Content

[0004] This invention addresses the aforementioned problems by proposing a refrigeration device with oxygen generation function.

[0005] The technical solution adopted by this utility model is as follows:

[0006] This application provides a refrigeration device with oxygen generation function, including a refrigeration chamber, a refrigeration unit, a first gas storage box, a nitrogen separator, and an oxygen separator;

[0007] The refrigeration device is used to cool the refrigeration chamber;

[0008] The first gas storage tank is connected to the refrigeration chamber via a first pipeline and is used to store gas output from the refrigeration chamber and / or gas input from the outside.

[0009] The input port of the nitrogen separator is connected to the first gas storage tank through a second pipeline, and the input port of the oxygen separator is connected to the first gas storage tank through a third pipeline.

[0010] The output port of the nitrogen separator is used to connect to the refrigeration chamber and to fill the refrigeration chamber with nitrogen, and the output port of the oxygen separator is used to connect to the oxygen supply device.

[0011] The refrigeration equipment provided in this application, by adding an oxygen separator, not only has a modified atmosphere preservation function but also an oxygen generation function: after the nitrogen separator separates, prepares, and purifies nitrogen, it is introduced into the refrigeration chamber to replace the air in the refrigeration chamber with nitrogen or air with a high nitrogen content. At the same time, after the nitrogen separation and preparation, the air containing oxygen enriched after passing through the nitrogen separator is reintroduced into the oxygen separator for oxygen separation, preparation, and purification, so as to facilitate subsequent use (e.g., external oxygen supply). That is, the oxygen generation function of the refrigeration equipment provided in this application not only avoids oxygen waste but also improves oxygen separation efficiency.

[0012] Furthermore, it also includes a filter, a first compressor, and a first condenser sequentially arranged on the first pipeline;

[0013] The filter is located near the refrigeration chamber and is used to filter dust and impurities in the gas.

[0014] The first compressor is disposed between the filter and the first condenser to provide pressure to the gas;

[0015] The first condenser is located near the first gas storage tank and is used to cool the gas to remove water vapor from it.

[0016] Furthermore, the first condenser is disposed in the refrigeration chamber. In actual use, the entire first condenser or a portion thereof can be disposed in the refrigeration chamber.

[0017] It also includes a water removal device, which is connected to the first condenser. When the gas in the first compressor is cooled by the first condenser, the gaseous water molecules liquefy into liquid water, and the water removal device is used to remove the liquid water.

[0018] By placing a first condenser inside the refrigeration chamber, the refrigeration chamber further cools the first condenser, thereby enhancing the removal of water vapor from the gas. Simultaneously, the first condenser releases minimal heat, thus not affecting the normal refrigeration function of the refrigeration chamber.

[0019] Furthermore, it also includes a second gas storage tank, which is disposed on the first pipeline and located between the filter and the refrigeration chamber;

[0020] The second gas storage tank is also used to store air supplied from the outside.

[0021] Furthermore, the output port of the nitrogen separator is connected to the refrigeration chamber via the fourth pipeline;

[0022] It also includes a third gas storage tank, which is installed on the fourth pipeline and is used to store nitrogen gas that has been separated and purified by a nitrogen separator.

[0023] Furthermore, it also includes a first switching valve and a second switching valve, the first switching valve being disposed on the second pipeline and the second switching valve being disposed on the third pipeline.

[0024] Furthermore, it also includes a fourth gas storage tank, an oxygen supply device, and a fifth pipeline.

[0025] The oxygen supply device is connected to the output end of the oxygen separator through the fifth pipeline and is used to supply oxygen to the user;

[0026] The fourth gas storage tank is installed on the fifth pipeline and is used to store oxygen that has been separated and purified by the oxygen separator.

[0027] Furthermore, it also includes a third switching valve, a fourth switching valve, and an oxygen flow meter, wherein the third switching valve is disposed between the third gas storage tank and the nitrogen separator;

[0028] The fourth switching valve is located between the fourth gas storage tank and the oxygen separator;

[0029] The oxygen flow meter is installed between the fourth gas storage tank and the oxygen supply device.

[0030] When the nitrogen separator is performing nitrogen separation and purification, the first switch valve is open, and at least the second switch valve is closed.

[0031] When the oxygen separator is performing oxygen separation and purification, the second switch valve is open, and at least the first switch valve is closed.

[0032] Furthermore, the nitrogen separator is a nitrogen molecular sieve tank;

[0033] The oxygen separator is an oxygen molecular sieve tank.

[0034] Furthermore, the nitrogen molecular sieve tank has an input port and is bidirectionally circulatedly connected to the first gas storage tank via a second pipeline; the oxygen molecular sieve tank has an input port and is bidirectionally circulatedly connected to the first gas storage tank via a third pipeline.

[0035] Or,

[0036] The nitrogen molecular sieve tank has two output ports. One output port is connected to the refrigeration chamber, and the other output port is connected to the first gas storage tank through the sixth pipeline. The oxygen molecular sieve tank has two output ports. One output port is connected to the fourth gas storage tank, and the other output port is connected to the first gas storage tank through the seventh pipeline.

[0037] Furthermore, the first gas storage tank is equipped with a flow valve, which is used to connect the first gas storage tank with the outside. When the gas in the first gas storage tank is repeatedly sieved by an oxygen separator or a nitrogen separator, other impurity gases (such as carbon dioxide) accumulated in the first gas storage tank are discharged to the outside through the flow valve.

[0038] Furthermore, the nitrogen separator can also be a cryogenic nitrogen air separation unit or a pressure swing adsorption (PSA) unit; the oxygen separator can also be a cryogenic oxygen air separation unit or a pressure swing adsorption (PSA) unit.

[0039] Furthermore, the refrigeration device is a closed-loop system, and the refrigeration device includes an evaporator, a second condenser, a second compressor, and an expansion valve connected in sequence;

[0040] The evaporator is located inside the refrigeration chamber and is used to cool the refrigeration chamber.

[0041] In actual use, it also includes refrigerant and heat exchange system.

[0042] The beneficial effects of this utility model are:

[0043] (1) The refrigeration equipment provided in this application has an oxygen generation function in addition to the modified atmosphere preservation function by adding an oxygen separator: after the nitrogen separator separates, prepares and purifies nitrogen, the nitrogen is introduced into the refrigeration chamber to replace the air in the refrigeration chamber with nitrogen or air with a high nitrogen content. At the same time, the air containing oxygen enriched after passing through the nitrogen separator is reintroduced into the oxygen separator for oxygen separation, preparation and purification, so as to facilitate subsequent use. That is, the oxygen generation function of the refrigeration equipment provided in this application not only avoids the waste of oxygen, but also improves the oxygen separation efficiency.

[0044] (2) A first condenser is installed in the refrigeration chamber to further cool the refrigeration chamber and enhance the removal of water vapor from the gas. At the same time, the first condenser releases little heat and does not affect the normal refrigeration of the refrigeration chamber. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the connection structure of a refrigeration device with oxygen generation function according to an embodiment of this utility model.

[0046] The labels for the attached figures are as follows:

[0047] 1. Refrigeration chamber; 2. Evaporator; 3. Second condenser; 4. Second compressor; 5. Expansion valve; 6. First gas storage tank; 7. Nitrogen separator; 8. Oxygen separator; 9. Oxygen supply device; 10. Filter; 11. First compressor; 12. First condenser; 13. Second gas storage tank; 14. First switching valve; 15. Third gas storage tank; 16. Fourth gas storage tank; 17. Second switching valve; 18. Oxygen flow meter; 19. First pipeline; 20. Second pipeline; 21. Third pipeline; 22. Fourth pipeline; 23. Fifth pipeline; 24. Sixth pipeline; 25. Seventh pipeline; 26. Third switching valve; 27. Fourth switching valve; 28. Opening valve. Detailed Implementation

[0048] The present invention will now be described in detail with reference to the accompanying drawings.

[0049] like Figure 1 As shown, this application provides a refrigeration device with oxygen generation function, including a refrigeration chamber 1, a refrigeration unit, a first gas storage box 6, a nitrogen separator 7, and an oxygen separator 8;

[0050] The refrigeration unit is used to cool the refrigeration chamber 1;

[0051] The first gas storage tank 6 is connected to the refrigeration chamber 1 via the first pipeline 19 and is used to store the gas output from the refrigeration chamber 1 and / or the gas input from the outside.

[0052] The nitrogen separator 7 is bidirectionally circulated to the first gas storage tank 6 via the second pipeline 20, and the oxygen separator 8 is bidirectionally circulated to the first gas storage tank 6 via the third pipeline 21.

[0053] The nitrogen separator 7 is connected to the refrigeration chamber 1 and is used to fill the refrigeration chamber 1 with nitrogen. The oxygen separator 8 is also connected to the oxygen supply device 9.

[0054] The refrigeration equipment provided in this application, by adding an oxygen separator 8, not only has a modified atmosphere preservation function but also an oxygen generation function: after the nitrogen separator 7 separates, prepares, and purifies nitrogen, the nitrogen is introduced into the refrigeration chamber 1 to replace the air in the refrigeration chamber 1 with nitrogen or air with a high nitrogen content. At the same time, the air containing oxygen enriched after passing through the nitrogen separator 7 is reintroduced into the oxygen separator 8 for oxygen separation, preparation, and purification, so as to facilitate subsequent use (e.g., external oxygen supply). That is, the oxygen generation function of the refrigeration equipment provided in this application not only avoids oxygen waste but also improves oxygen separation efficiency.

[0055] In this embodiment, nitrogen separator 7 is a nitrogen molecular sieve tank; oxygen separator 8 is an oxygen molecular sieve tank.

[0056] The nitrogen molecular sieve tank has two output ports. One output port is connected to the refrigeration chamber 1, and the other output port is connected to the first gas storage tank 6 via the sixth pipe 24, so as to facilitate repeated sieving of the nitrogen molecular sieve tank. The oxygen molecular sieve tank has two output ports. One output port is connected to the fourth gas storage tank 16, and the other output port is connected to the first gas storage tank 6 via the seventh pipe 25, so as to facilitate repeated sieving of the oxygen molecular sieve tank.

[0057] In other embodiments, the nitrogen molecular sieve tank may also have an input port, which is bidirectionally circulatedly connected to the first gas storage tank 6 via a second pipeline 20; the oxygen molecular sieve tank may also have an input port, which is bidirectionally circulatedly connected to the first gas storage tank 6 via a third pipeline 21.

[0058] In this embodiment, a filter 10, a first compressor 11, and a first condenser 12 are sequentially disposed on the first pipeline 19;

[0059] The filter 10 is located near the side of the refrigeration chamber 1 and is used to filter dust and impurities in the gas.

[0060] The first compressor 11 is disposed between the filter 10 and the first condenser 12, and is used to provide pressure to the gas;

[0061] The first condenser 12 is located near the first gas storage tank 6 and is used to cool the gas to remove water vapor from the gas.

[0062] In this embodiment, the first condenser 12 is disposed inside the refrigeration chamber 1;

[0063] It also includes a water removal device (not shown in the figure), which is connected to the first condenser 12. When the gas in the first compressor 11 is cooled by the first condenser 12, the gaseous water molecules liquefy into liquid water. The water removal device is used to remove the liquid water.

[0064] The first condenser 12 is installed inside the refrigeration chamber 1, which further cools the refrigeration chamber 1 to enhance the removal of water vapor from the gas. At the same time, the first condenser 12 releases little heat and does not affect the normal cooling of the refrigeration chamber 1.

[0065] In this embodiment, a second gas storage tank 13 is also included. The second gas storage tank 13 is disposed on the first pipeline 19 and is located between the filter 10 and the refrigeration chamber 1.

[0066] The second gas storage tank 13 is also used to store air supplied from the outside.

[0067] In this embodiment, the output port of the nitrogen separator 7 is connected to the refrigeration chamber 1 via the fourth pipe 22;

[0068] It also includes a third gas storage tank 15, which is installed on the fourth pipeline 22. The fourth pipeline 22 is used to store nitrogen gas that has been separated and purified by the nitrogen separator 7.

[0069] In this embodiment, a first switching valve 14 and a second switching valve 17 are also included. The first switching valve 14 is disposed on the second pipeline 20, and the second switching valve 17 is disposed on the third pipeline 21.

[0070] In this embodiment, a fourth gas storage tank 16, an oxygen supply device 9, and a fifth pipeline 23 are also included.

[0071] The oxygen supply device 9 is connected to the output end of the oxygen separator 8 via the fifth pipeline 23 and is used to supply oxygen to the user;

[0072] The fourth gas storage tank 16 is installed on the fifth pipeline 23 and is used to store oxygen that has been separated and purified by the oxygen separator 8.

[0073] In this embodiment, a third switching valve 26, a fourth switching valve 27, and an oxygen flow meter 18 are also included.

[0074] The third switching valve 26 is located between the third gas storage tank 15 and the nitrogen separator 7;

[0075] The fourth switching valve 27 is located between the fourth gas storage tank 16 and the oxygen separator 8;

[0076] The oxygen flow meter 18 is installed between the fourth gas storage tank 16 and the oxygen supply device 9.

[0077] When the nitrogen separator 7 is performing nitrogen separation and purification, the first switch valve 14 is opened, and at least the second switch valve 17 is closed, so that the nitrogen separator 7 can be repeatedly sieved.

[0078] When the oxygen separator 8 is performing oxygen separation and purification, the second switch valve 17 is opened, while at least the first switch valve 14 is closed, so that the oxygen separator 8 can be repeatedly sieved.

[0079] In this embodiment, a flow valve 28 is provided on the first gas storage tank 6. The flow valve 28 is used to connect the first gas storage tank 6 with the outside. When the gas in the first gas storage tank 6 is repeatedly sieved by the oxygen separator 8 or the nitrogen separator 7, other impurity gases (such as carbon dioxide) accumulated in the first gas storage tank 6 are discharged to the outside through the flow valve 28. When the oxygen separator 8 or the nitrogen separator 7 is repeatedly sieved, the flow valve 28 is in a closed state.

[0080] In this embodiment, the nitrogen separator 7 can also be a cryogenic nitrogen air separation unit or a pressure swing adsorption (PSA) unit; the oxygen separator 8 can also be a cryogenic oxygen air separation unit or a pressure swing adsorption (PSA) unit.

[0081] In this embodiment, the refrigeration device is a closed-loop system, and the refrigeration device includes an evaporator 2, a second condenser 3, a second compressor 4 and an expansion valve 5 connected in sequence.

[0082] Evaporator 2 is installed inside the refrigeration chamber 1 and is used to cool the refrigeration chamber 1.

[0083] In actual use, it also includes refrigerant and heat exchange system.

[0084] The above description is only a preferred embodiment of the present utility model and does not limit the scope of patent protection of the present utility model. Any equivalent structural transformations made based on the content of the present utility model specification and drawings, whether directly or indirectly applied to other related technical fields, are similarly included within the scope of protection of the present utility model.

Claims

1. A refrigeration device with oxygen generation function, characterized in that, It includes a cold storage chamber, a refrigeration unit, a first gas storage tank, a nitrogen separator, and an oxygen separator; The refrigeration device is used to cool the refrigeration chamber; The first gas storage tank is connected to the refrigeration chamber via a first pipeline and is used to store gas output from the refrigeration chamber and / or gas input from the outside. The input port of the nitrogen separator is connected to the first gas storage tank through a second pipeline, and the input port of the oxygen separator is connected to the first gas storage tank through a third pipeline. The output port of the nitrogen separator is used to connect to the refrigeration chamber and to fill the refrigeration chamber with nitrogen, and the output port of the oxygen separator is used to connect to the oxygen supply device.

2. The refrigeration equipment with oxygen generation function as described in claim 1, characterized in that, It also includes a filter, a first compressor, and a first condenser, which are sequentially arranged on the first pipeline; The filter is located near the refrigeration chamber and is used to filter dust and impurities in the gas. The first compressor is disposed between the filter and the first condenser to provide pressure to the gas; The first condenser is located near the first gas storage tank and is used to cool the gas to remove water vapor from it.

3. A refrigeration device with oxygen-generating function as described in claim 2, characterized in that, The first condenser is disposed within the refrigeration chamber; It also includes a water removal device, which is connected to the first condenser. When the gas in the first compressor is cooled by the first condenser, the gaseous water molecules liquefy into liquid water, and the water removal device is used to remove the liquid water.

4. A refrigeration device with oxygen generation function as described in claim 2, characterized in that, It also includes a second gas storage tank, which is disposed on the first pipeline and located between the filter and the refrigeration chamber; The second gas storage tank is also used to store air supplied from the outside.

5. A refrigeration device with oxygen generation function as described in claim 1, characterized in that, It also includes a fourth pipeline, through which the output port of the nitrogen separator is connected to the refrigeration chamber; It also includes a third gas storage tank, which is installed on the fourth pipeline and is used to store nitrogen gas that has been separated and purified by a nitrogen separator.

6. A refrigeration device with oxygen-generating function as described in claim 1, characterized in that, It also includes a first switching valve and a second switching valve, wherein the first switching valve is disposed on the second pipeline and the second switching valve is disposed on the third pipeline.

7. A refrigeration device with oxygen-generating function as described in claim 5, characterized in that, It also includes a fourth gas storage tank, an oxygen supply device, and a fifth pipeline. The oxygen supply device is connected to the output end of the oxygen separator through the fifth pipeline and is used to supply oxygen to the user; The fourth gas storage tank is installed on the fifth pipeline and is used to store oxygen that has been separated and purified by the oxygen separator.

8. A refrigeration device with oxygen-generating function as described in claim 7, characterized in that, It also includes a third switching valve, a fourth switching valve, and an oxygen flow meter; The third switching valve is located between the third gas storage tank and the nitrogen separator; The fourth switching valve is located between the fourth gas storage tank and the oxygen separator; The oxygen flow meter is installed between the fourth gas storage tank and the oxygen supply device.

9. A refrigeration device with oxygen-generating function as described in claim 7, characterized in that, The nitrogen separator is a nitrogen molecular sieve tank, and the oxygen separator is an oxygen molecular sieve tank; The first gas storage tank is equipped with a flow valve, which is used to connect the first gas storage tank with the outside world; The nitrogen molecular sieve tank has an input port and is bidirectionally circulatedly connected to the first gas storage tank via a second pipeline; the oxygen molecular sieve tank has an input port and is bidirectionally circulatedly connected to the first gas storage tank via a third pipeline. Or, The nitrogen molecular sieve tank has two output ports. One output port is connected to the refrigeration chamber, and the other output port is connected to the first gas storage tank through the sixth pipeline. The oxygen molecular sieve tank has two output ports. One output port is connected to the fourth gas storage tank, and the other output port is connected to the first gas storage tank through the seventh pipeline.

10. A refrigeration device with oxygen-generating function as described in claim 1, characterized in that, The refrigeration device includes an evaporator, a second condenser, a second compressor, and an expansion valve connected in sequence; The evaporator is located inside the refrigeration chamber and is used to cool the refrigeration chamber.

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