Medical oxygen generator capable of automatically controlling temperature

Abstract

The invention discloses an automatic temperature control medical oxygen generator which comprises an outer shell, an air compressor is installed at the air inlet end of the outer shell, a pre-cooling chamber is installed at the air outlet end of the air compressor, an oxygen generation assembly is installed at the air outlet end of the pre-cooling chamber, an oxygen storage tank is installed at the air outlet end of the oxygen generation assembly, and an oxygen outlet temperature control cavity is installed at the air outlet end of the oxygen storage tank. And the air outlet end of the oxygen outlet temperature control cavity is connected with the oxygen outlet end of the outer shell. The device has the beneficial effects that heat exchange cold water flowing out of the refrigeration box is subjected to heat exchange with the precooling chamber and the air compressor, then the temperature is increased, warm water with a certain temperature is obtained, and the warm water exchanges heat with oxygen with the low temperature in the oxygen outlet temperature control cavity through the heating pipe; the oxygen in the oxygen outlet temperature control cavity reaches the temperature suitable for breathing of a user, heat generated in the air compression and pre-cooling process is effectively used for heating the oxygen in the oxygen outlet temperature control cavity, the utilization rate of the heat in the equipment is increased, and the operation cost of the equipment is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a medical oxygen generator with automatic temperature control. Background Art

[0002] A medical oxygen generator is a medical device that extracts oxygen from the air using technologies such as pressure swing adsorption. It is applicable to medical institutions and families for oxygen therapy and healthcare. In the oxygen generation process of a medical oxygen generator (pressure swing adsorption oxygen generator), the oxygen generation raw material is air. After the air is filtered (removing oil, dust, moisture, solid impurities, etc. in the air), it enters a compressor for compression. The compressed high-pressure air enters an adsorption tower for adsorption and separation after cooling. The adsorption tower is filled with molecular sieves, and both nitrogen and carbon dioxide in it will be adsorbed by the molecular sieves. The gas flowing out of the adsorption tower is oxygen with a relatively high purity and can be used as medical oxygen. A part of the separated oxygen enters a gas storage tank through a one-way valve and flows out for users to use after being decompressed by a pressure reducing valve, passing through a flow meter and a humidifying bottle. The air pre-cooling system is a system used to pre-cool and wash the raw material air before it enters the air separation device or the molecular sieve adsorber. It includes an air cooling tower, a water cooling tower, a refrigeration unit, a water pump, valves, automatic regulating valves, etc. The main function of the air pre-cooling system is to cool and wash the raw material air to ensure the stability of the overall system operation.

[0003] Some existing medical oxygen generators need to pre-cool the air raw material entering the molecular sieve adsorber during the oxygen generation process. And at the oxygen outlet end of the oxygen generator, in order to ensure that the oxygen temperature is suitable for the medical needs of users, it is usually necessary to heat and adjust the oxygen again. Therefore, after the air enters the oxygen generator, the air needs to be temperature-adjusted multiple times. During this process, not only a large amount of heat is wasted, but also a relatively high operating cost is required for air refrigeration, resulting in a certain degree of waste. Summary of the Invention

[0004] The object of the present invention is to overcome the drawbacks that some existing medical oxygen generators need to pre-cool the air raw material entering the molecular sieve adsorber during the oxygen generation process, and at the oxygen outlet end of the oxygen generator, in order to ensure that the oxygen temperature is suitable for the medical needs of users, it is usually necessary to heat and adjust the oxygen again. Therefore, after the air enters the oxygen generator, the air needs to be temperature-adjusted multiple times. During this process, not only a large amount of heat is wasted, but also a relatively high operating cost is required for air refrigeration, resulting in a certain degree of waste, and to provide a medical oxygen generator with automatic temperature control.

[0005] The object of the present invention is achieved by the following technical solutions: A medical oxygen generator with automatic temperature control, comprising a housing body. An air compressor is installed at the air inlet end of the housing body. A pre-cooling chamber is installed at the air outlet end of the air compressor. An oxygen generation component is installed at the air outlet end of the pre-cooling chamber. An oxygen storage tank is installed at the air outlet end of the oxygen generation component. An oxygen outlet temperature control chamber is installed at the air outlet end of the oxygen storage tank. The air outlet end of the oxygen outlet temperature control chamber is connected to the oxygen outlet end of the housing body. Multiple sets of heating tubes in a spiral shape are arranged in the oxygen outlet temperature control chamber;

[0006] A refrigeration box is installed inside the housing body. The water outlet end of the refrigeration box is connected to the pre-cooling chamber. A heat exchange tube is installed at the water outlet end of the pre-cooling chamber. The heat exchange tube is wound around the outer wall of the air compressor. The water inlet ends of multiple sets of heating tubes respectively extend outside the oxygen outlet temperature control chamber and are connected to the water outlet end of the heat exchange tube. A first valve is installed between the water inlet ends of multiple sets of heating tubes and the water outlet end of the heat exchange tube. The water outlet ends of multiple sets of heating tubes are connected to the water inlet end of the refrigeration box;

[0007] A PLC controller connected to multiple sets of first valves is installed on the refrigeration box. A first temperature sensor connected to the PLC controller is installed in the oxygen outlet temperature control chamber. A second temperature sensor connected to the PLC controller is installed at the air outlet end of the pre-cooling chamber. The PLC controller, the refrigeration box, the first valve, the first temperature sensor, and the second temperature sensor form a temperature control system;

[0008] It is set that the refrigeration box pre-cools the high-temperature air compressed by the air compressor in the pre-cooling chamber with cold water. The heat-exchanged cold water then flows into the heat exchange tube and exchanges heat with the outer wall of the air compressor, improving the heat dissipation effect of the air compressor and the working stability of the air compressor. At the same time, the heat-exchanged warm water flowing out of the refrigeration box has its temperature increased after heat exchange with the pre-cooling chamber and the air compressor and becomes warm water with a certain temperature. The warm water exchanges heat with the oxygen at a lower temperature in the oxygen outlet temperature control chamber through the heating tube, so that the oxygen in the oxygen outlet temperature control chamber reaches a temperature suitable for the user to breathe. Among them, multiple sets of first valves can control the number of heating tubes through which the warm water passes, thereby controlling the contact area between the warm water and the oxygen in the oxygen outlet temperature control chamber, realizing the adjustment of the oxygen temperature in the oxygen outlet temperature control chamber. Thus, the heat generated during air compression and pre-cooling can be effectively utilized to heat the oxygen in the oxygen outlet temperature control chamber, ensuring the user experience, improving the utilization rate of the heat in the equipment, reducing the operating cost of the equipment, and achieving the effect of energy conservation;

[0009] A first temperature sensor is set to monitor the temperature of oxygen in the oxygen outlet temperature control cavity. When the first temperature sensor detects that the temperature in the oxygen outlet temperature control cavity is too low, the PLC controller can increase the number of first valves opened, thereby increasing the amount of warm water passing through the heating pipes in the heat exchange pipes, and thus increasing the contact area between the warm water in the heat exchange pipes and the oxygen in the oxygen outlet temperature control cavity, achieving an increase in the temperature of the oxygen in the oxygen outlet temperature control cavity. When the temperature of the oxygen in the oxygen outlet temperature control cavity is too high, a certain number of first valves can be closed through the PLC controller to reduce the contact area between the heating pipes and the oxygen in the oxygen outlet temperature control cavity, thereby controlling the temperature to reach the set appropriate value and completing the automatic control of the oxygen temperature at the oxygen outlet end of the oxygen generator;

[0010] A second temperature sensor is set to monitor the temperature of the air at the air outlet end of the precooling chamber. When the temperature of the air at the air outlet end of the precooling chamber exceeds the set range, the PLC controller controls the output power of the variable-frequency chiller in the refrigeration box to achieve the control of the temperature of the air at the air outlet end of the precooling chamber, ensuring the stability of the air temperature at the air inlet end of the oxygen production component and improving the stability of the equipment operation.

[0011] A further technical solution is that a variable-frequency chiller connected to the PLC controller is installed in the refrigeration box. A circulation pump is installed in the refrigeration box. The water outlet end of the circulation pump is connected to the water outlet end of the refrigeration box. A third temperature sensor corresponding to the water inlet end of the circulation pump is installed in the refrigeration box. The third temperature sensor is connected to the PLC controller. By setting the variable-frequency chiller, the PLC controller can obtain various temperature data inside the equipment through the first temperature sensor, the second temperature sensor, and the third temperature sensor to adjust the output power of the variable-frequency chiller, so that the temperature in each component inside the equipment reaches the set value and ensures the stable operation of the equipment.

[0012] A further technical solution is that a precooling pipe connected to the air outlet end of the air compressor is installed in the precooling chamber. The air outlet end of the precooling pipe is connected to the air inlet end of the oxygen production component. The precooling pipe is arranged in a spiral shape. The second temperature sensor is installed at the air outlet end of the precooling pipe. By setting the precooling pipe in a spiral shape, the contact area between the cold water in the precooling chamber and the precooling pipe is increased, thereby improving the precooling effect of the air in the precooling pipe.

[0013] A further technical solution is that the air outlet end of the air compressor is connected to the air inlet end of the precooling pipe through an air delivery pipe. The water outlet end of the precooling chamber is connected to the heat exchange pipe through a cold water pipe. The cold water pipe and the air delivery pipe are wound around each other. By setting the cold water pipe and the air delivery pipe to be wound around each other, the heat exchange effect between the cold water flowing out of the precooling chamber and the hot air output by the air compressor is further improved, and the hot air output by the air compressor is pre-cooled in advance.

[0014] A further technical solution is that the oxygen generation component includes two molecular sieve adsorption towers. A first three-way valve is connected between the air inlet ends of the two molecular sieve adsorption towers and the air outlet end of the precooling chamber. A second three-way valve is connected between the air outlet ends of the two first three-way valves and the oxygen storage tank. By setting the first three-way valve and the second three-way valve to cooperate, the two molecular sieve adsorption towers can work alternately, enabling the two molecular sieve adsorption towers to alternately adsorb and release, so as to ensure that the oxygen generation component realizes the cycle of adsorption and desorption, thereby effectively separating oxygen and ensuring the continuous supply of oxygen.

[0015] A further technical solution is that a regulating valve is installed between the oxygen storage tank and the oxygen outlet temperature control chamber. By setting the regulating valve, the regulation and control of the oxygen output volume are realized.

[0016] A further technical solution is that an air filter element is installed at the air inlet end of the air compressor. The air filter element is detachably connected to the air inlet end of the air compressor. Setting the air filter element to be detachably connected to the air inlet end of the air compressor facilitates the replacement or cleaning of the air filter element, ensuring the filtering effect of the air filter element on the air at the air inlet end of the air compressor.

[0017] A further technical solution is that a heat dissipation window corresponding to the air compressor is installed on the outer shell. The heat dissipation window is set to further improve the heat dissipation effect of the air compressor.

[0018] The present invention has the following advantages: The present invention sets a refrigeration box to pre-cool the high-temperature air in the precooling chamber with cold water. The heat-exchanged cold water then flows into the heat exchange tube and exchanges heat with the outer wall of the air compressor. The heat-exchanged cold water flowing out of the refrigeration box is heated after exchanging heat with the precooling chamber and the air compressor and becomes warm water with a certain temperature. The warm water exchanges heat with the relatively low-temperature oxygen in the oxygen outlet temperature control chamber through the heating tube, so that the oxygen in the oxygen outlet temperature control chamber reaches a temperature suitable for the user to breathe. Thus, the heat generated during air compression and precooling can be effectively utilized to heat the oxygen in the oxygen outlet temperature control chamber, improving the utilization rate of the heat in the equipment, reducing the operating cost of the equipment, and achieving the effect of energy conservation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic cross-sectional view of the overall structure of the present invention;

[0020] Figure 2 is a schematic structural view of the oxygen generation component of the present invention;

[0021] Figure 3 is a schematic cross-sectional view of the internal structure of the refrigeration box of the present invention;

[0022] Figure 4 is a schematic three-dimensional structural view of the present invention;

[0023] In the figure, 1 is the outer housing; 2 is the air compressor; 3 is the precooling chamber; 4 is the oxygen generation component; 401 is the molecular sieve adsorption tower; 402 is the first three-way valve; 403 is the second three-way valve; 5 is the oxygen storage tank; 6 is the oxygen outlet temperature control chamber; 7 is the refrigeration box; 8 is the precooling pipe; 9 is the heat exchange pipe; 10 is the heating pipe; 11 is the first valve; 12 is the first temperature sensor; 13 is the second temperature sensor; 14 is the regulating valve; 15 is the air filter element; 16 is the cold water pipe; 17 is the gas transmission pipe; 18 is the PLC controller; 19 is the variable frequency chiller; 20 is the circulation pump; 21 is the third temperature sensor; 22 is the heat dissipation window. Detailed implementation manners

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents the selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0026] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0027] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0028] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship when the product of the present invention is usually placed, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should also be noted that, unless otherwise clearly specified and defined, the terms "arrangement", "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0030] As Figures 1 to 4 shown, an automatically temperature-controlled medical oxygen generator includes a housing 1. An air compressor 2 is installed at the air inlet end of the housing 1. An outlet end of the air compressor 2 is installed with a precooling chamber 3. An outlet end of the precooling chamber 3 is installed with an oxygen generation component 4. An outlet end of the oxygen generation component 4 is installed with an oxygen storage tank 5. An outlet end of the oxygen storage tank 5 is installed with an oxygen outlet temperature control chamber 6. An outlet end of the oxygen outlet temperature control chamber 6 is connected to the oxygen outlet end of the housing 1. Multiple groups of heating tubes 10 are arranged in a spiral shape in the oxygen outlet temperature control chamber 6;

[0031] A refrigeration box 7 is installed in the housing 1. A water outlet end of the refrigeration box 7 is connected to the precooling chamber 3. A heat exchange tube 9 is installed at the water outlet end of the precooling chamber 3. The heat exchange tube 9 is wound around the outer wall of the air compressor 2. Inlet ends of multiple groups of heating tubes 10 respectively extend outside the oxygen outlet temperature control chamber 6 and are connected to the water outlet end of the heat exchange tube 9. A first valve 11 is installed between the inlet ends of multiple groups of heating tubes 10 and the water outlet end of the heat exchange tube 9. Outlet ends of multiple groups of heating tubes 10 are connected to the water inlet end of the refrigeration box 7;

[0032] A PLC controller 18 connected to multiple groups of first valves 11 is installed on the refrigeration box 7. A first temperature sensor 12 connected to the PLC controller 18 is installed in the oxygen outlet temperature control chamber 6. A second temperature sensor 13 connected to the PLC controller 18 is installed at the outlet end of the precooling chamber 3. The PLC controller 18, the refrigeration box 7, the first valve 11, the first temperature sensor 12, and the second temperature sensor 13 form a temperature control system;

[0033] By setting up a refrigeration box 7, cold water is used to pre-cool the high-temperature air compressed by the air compressor 2 in the pre-cooling chamber 3. The high-temperature air compressed by the air compressor 2 is usually 100°C to 150°C. The heat-exchanged cold water then flows into the heat exchange tube 9 to exchange heat with the outer wall of the air compressor 2, improving the heat dissipation effect of the air compressor 2 and enhancing the stability of the operation of the air compressor 2. At the same time, the heat-exchanged cold water flowing out of the refrigeration box 7 becomes warm water with a certain temperature after exchanging heat with the pre-cooling chamber 3 and the air compressor 2. The warm water exchanges heat with the relatively cold oxygen in the oxygen outlet temperature control chamber 6 through the heating tube 10, so that the oxygen in the oxygen outlet temperature control chamber 6 reaches a temperature suitable for the user to breathe. Among them, multiple groups of first valves 11 can control the number of heating tubes 10 through which the warm water passes, thereby controlling the contact area between the warm water and the oxygen in the oxygen outlet temperature control chamber 6, and realizing the adjustment of the temperature of the oxygen in the oxygen outlet temperature control chamber 6. Usually, the temperature of the oxygen in the oxygen outlet temperature control chamber 6 is set to 20°C to 30°C. Thus, the heat generated during air compression and pre-cooling can be effectively utilized to heat the oxygen in the oxygen outlet temperature control chamber 6, ensuring the user experience, improving the utilization rate of the heat in the equipment, reducing the operation cost of the equipment, and achieving the effect of energy conservation;

[0034] A first temperature sensor 12 is set to monitor the temperature of the oxygen in the oxygen outlet temperature control chamber 6. When the first temperature sensor 12 detects that the temperature in the oxygen outlet temperature control chamber 6 is too low, the PLC controller 18 can increase the number of first valves 11 opened, thereby increasing the number of heating tubes 10 through which the warm water in the heat exchange tube 9 passes, and thus increasing the contact area between the warm water in the heat exchange tube 9 and the oxygen in the oxygen outlet temperature control chamber 6, realizing the increase of the oxygen in the oxygen outlet temperature control chamber 6. When the temperature of the oxygen in the oxygen outlet temperature control chamber 6 is too high, a certain number of first valves 11 can be closed through the PLC controller 18 to reduce the contact area between the heating tubes 10 in the oxygen outlet temperature control chamber 6 and the oxygen, thereby controlling the temperature to reach the set appropriate value and completing the automatic control of the oxygen temperature at the oxygen outlet end of the oxygen generator;

[0035] A second temperature sensor 13 is set to monitor the temperature of the air at the air outlet end of the pre-cooling chamber 3. The temperature at the air outlet end of the pre-cooling chamber 3 is controlled to be 5°C to 10°C. When the air temperature at the air outlet end of the pre-cooling chamber 3 exceeds the set range, the PLC controller 18 controls the variable-frequency chiller 19 in the refrigeration box 7 to adjust the output power to achieve the control of the air temperature at the air outlet end of the pre-cooling chamber 3, ensuring the stability of the air temperature at the air inlet end of the oxygen production assembly 4 and enhancing the stability of the equipment operation.

[0036] A variable-frequency chiller 19 connected to the PLC controller 18 is installed in the refrigeration box 7. A circulation pump 20 is installed in the refrigeration box 7. The water outlet end of the circulation pump 20 is connected to the water outlet end of the refrigeration box 7. A third temperature sensor 21 corresponding to the water inlet end of the circulation pump 20 is installed in the refrigeration box 7. The third temperature sensor 21 is connected to the PLC controller 18. By setting the variable-frequency chiller 19, the PLC controller 18 can obtain various temperature data inside the equipment through the first temperature sensor 12, the second temperature sensor 13 and the third temperature sensor 21 to adjust the output power of the variable-frequency chiller 19, so that the temperature in each component inside the equipment reaches the set value, ensuring the stable operation of the equipment.

[0037] A precooling pipe 8 connected to the air outlet end of the air compressor 2 is installed in the precooling chamber 3. The precooling chamber 3 is provided with a condensate drainage system for draining the condensate and impurities in the precooling pipe 8. The air outlet end of the precooling pipe 8 is connected to the air inlet end of the oxygen generation component 4. The precooling pipe 8 is arranged in a spiral shape. The second temperature sensor 13 is installed at the air outlet end of the precooling pipe 8. By setting the precooling pipe 8 in a spiral shape, the contact area between the cold water in the precooling chamber 3 and the precooling pipe 8 is increased, thereby improving the precooling effect of the air in the precooling pipe 8.

[0038] The air outlet end of the air compressor 2 is connected to the air inlet end of the precooling pipe 8 through an air delivery pipe 17. The water outlet end of the precooling chamber 3 is connected to the heat exchange pipe 9 through a cold water pipe 16. The cold water pipe 16 and the air delivery pipe 17 are wound around each other. By setting the cold water pipe 16 and the air delivery pipe 17 to be wound around each other, the heat exchange effect between the cold water flowing out of the precooling chamber 3 and the hot air output by the air compressor 2 is further improved, and the hot air output by the air compressor 2 is precooled in advance.

[0039] The oxygen generation component 4 includes two molecular sieve adsorption towers 401. A first three-way valve 402 is connected between the air inlet ends of the two molecular sieve adsorption towers 401 and the air outlet end of the precooling chamber 3. A second three-way valve 403 is connected between the air outlet ends of the two first three-way valves 402 and the oxygen storage tank 5. By setting the first three-way valve 402 and the second three-way valve 403 to cooperate, the two molecular sieve adsorption towers 401 can work alternately, enabling the two molecular sieve adsorption towers 401 to perform adsorption and release in turns, thereby ensuring that the oxygen generation component 4 realizes the cycle of adsorption and desorption, effectively separating oxygen, and ensuring the continuous supply of oxygen.

[0040] A regulating valve 14 is installed between the oxygen storage tank 5 and the oxygen outlet temperature control chamber 6. By setting the regulating valve 14, the regulation and control of the oxygen output volume are realized.

[0041] An air filter element 15 is installed at the air inlet end of the air compressor 2. The air filter element 15 is detachably connected to the air inlet end of the air compressor 2. The detachable connection between the air filter element 15 and the air inlet end of the air compressor 2 is provided to facilitate the replacement or cleaning of the air filter element 15 and ensure the filtering effect of the air filter element 15 on the air at the air inlet end of the air compressor 2.

[0042] A heat dissipation window 22 corresponding to the air compressor 2 is installed on the outer housing 1. The heat dissipation window 22 is provided to further improve the heat dissipation effect of the air compressor 2.

[0043] The working process of the present invention is as follows: When the present invention generates oxygen, the air compressor 2 compresses the external air, and the air filter element 15 preliminarily filters the external air. At the same time, the variable frequency chiller 19 and the circulation pump 20 in the refrigeration box 7 are started to cool the circulating water in the equipment. The cooled water flows into the precooling chamber 3 and exchanges heat with the high-temperature compressed air output by the air compressor 2 to precool the compressed air so that it enters the oxygen generation assembly 4 at an appropriate temperature for oxygen generation. The two molecular sieve adsorption towers 401 in the oxygen generation assembly 4 generate oxygen in a cycle, and the oxygen is stored in the oxygen storage tank 5. At the same time, the circulating water after heat exchange exchanges heat with the air compressor 2 through the heat exchange tube 9 to improve the heat exchange effect of the air compressor 2. At the same time, under the action of the precooling chamber 3 and the air compressor 2, the temperature of the circulating water in the heat exchange tube 9 rises. Finally, the circulating water exchanges heat with the oxygen in the oxygen outlet temperature control chamber 6 through the heating tube 10 to increase the temperature of the oxygen in the oxygen outlet temperature control chamber 6. At the same time, the first temperature sensor 12 can detect the temperature of the oxygen in the oxygen outlet temperature control chamber 6, and the number of the first valves 11 opened is controlled by the PLC controller 18 so that the oxygen in the oxygen outlet temperature control chamber 6 reaches an appropriate temperature. Then, the circulating water enters the refrigeration box 7 again for refrigeration circulation, and the regulating valve 14 can be opened to adjust the output amount of oxygen.

[0044] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatically temperature-controlled medical oxygen generator, comprising an outer housing (1), characterized in that: An air compressor (2) is installed at the air inlet end of the outer shell (1). A pre-cooling chamber (3) is installed at the air outlet end of the air compressor (2). An oxygen generation assembly (4) is installed at the air outlet end of the pre-cooling chamber (3). An oxygen storage tank (5) is installed at the air outlet end of the oxygen generation assembly (4). An oxygen outlet temperature control chamber (6) is installed at the air outlet end of the oxygen storage tank (5). The air outlet end of the oxygen outlet temperature control chamber (6) is connected to the oxygen outlet end of the outer shell (1). Multiple groups of heating tubes (10) in a spiral shape are arranged in the oxygen outlet temperature control chamber (6). A refrigeration box (7) is installed inside the outer shell (1). The water outlet end of the refrigeration box (7) is connected to the pre-cooling chamber (3). A heat exchange tube (9) is installed at the water outlet end of the pre-cooling chamber (3). The heat exchange tube (9) is wound around the outer wall of the air compressor (2). The water inlet ends of multiple groups of heating tubes (10) respectively extend outside the oxygen outlet temperature control chamber (6) and are connected to the water outlet end of the heat exchange tube (9). A first valve (11) is installed between the water inlet ends of multiple groups of heating tubes (10) and the water outlet end of the heat exchange tube (9). The water outlet ends of multiple groups of heating tubes (10) are connected to the water inlet end of the refrigeration box (7). A PLC controller (18) connected to multiple groups of first valves (11) is installed on the refrigeration box (7). A first temperature sensor (12) connected to the PLC controller (18) is installed in the oxygen outlet temperature control chamber (6). A second temperature sensor (13) connected to the PLC controller (18) is installed at the air outlet end of the pre-cooling chamber (3).

2. The automatic temperature-controlled medical oxygen generator according to claim 1, wherein: A variable frequency chiller (19) connected to the PLC controller (18) is installed inside the refrigeration box (7). A circulation pump (20) is installed inside the refrigeration box (7). The water outlet end of the circulation pump (20) is connected to the water outlet end of the refrigeration box (7). A third temperature sensor (21) corresponding to the water inlet end of the circulation pump (20) is installed inside the refrigeration box (7). The third temperature sensor (21) is connected to the PLC controller (18).

3. An automatically temperature-controlled medical oxygen generator according to claim 1, characterized in that: A pre-cooling tube (8) connected to the air outlet end of the air compressor (2) is installed inside the pre-cooling chamber (3). The air outlet end of the pre-cooling tube (8) is connected to the air inlet end of the oxygen generation assembly (4). The pre-cooling tube (8) is arranged in a spiral shape. The second temperature sensor (13) is installed at the air outlet end of the pre-cooling tube (8).

4. An automatically temperature-controlled medical oxygen generator according to claim 3, characterized in that: The air outlet end of the air compressor (2) is connected to the air inlet end of the pre-cooling tube (8) through an air delivery pipe (17). The water outlet end of the pre-cooling chamber (3) is connected to the heat exchange tube (9) through a cold water pipe (16). The cold water pipe (16) and the air delivery pipe (17) are wound around each other.

5. An automatic temperature-controlled medical oxygen generator according to claim 1, characterized in that: The oxygen generation assembly (4) includes two molecular sieve adsorption towers (401). A first three-way valve (402) is connected between the air inlet ends of the two molecular sieve adsorption towers (401) and the air outlet end of the pre-cooling chamber (3). A second three-way valve (403) is connected between the air outlet ends of the two first three-way valves (402) and the oxygen storage tank (5).

6. The automatic temperature-controlled medical oxygen generator according to claim 1, characterized in that: A regulating valve (14) is installed between the oxygen storage tank (5) and the oxygen outlet temperature control chamber (6).

7. An automatically temperature-controlled medical oxygen generator according to claim 1, characterized in that: An air filter element (15) is installed at the air inlet end of the air compressor (2), and the air filter element (15) is detachably connected to the air inlet end of the air compressor (2).

8. An automatically temperature-controlled medical oxygen generator according to claim 1, characterized in that: A heat dissipation window (22) corresponding to the air compressor (2) is installed on the outer housing (1).

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