Oxygen production system control method, oxygen production system and air conditioner

Abstract

The application provides an oxygen production system control method, an oxygen production system and an air conditioner. The oxygen production system control method comprises the following steps: obtaining air pressure parameter information at multiple to-be-detected positions; and performing pressure relief operation on the to-be-detected positions according to the air pressure parameter information to adjust the air pressure values at the to-be-detected positions. The multiple to-be-detected positions comprise a first to-be-detected position, a second to-be-detected position and a third to-be-detected position. The first to-be-detected position is located between a gas supply device of the oxygen production system and a gas supply silencer of the oxygen production system. The second to-be-detected position is located between the gas supply silencer and an oxygen production device of the oxygen production system. The third to-be-detected position is located between the oxygen production device and an exhaust silencer of the oxygen production system. The application effectively solves the problems of low operation stability and short service life of the oxygen production system of the air conditioner in the prior art.

Description

Technical Field

[0001] This invention relates to the field of air conditioner technology, and more specifically, to an oxygen generation system control method, an oxygen generation system, and an air conditioner. Background Technology

[0002] Currently, oxygen-generating air conditioners typically have a built-in oxygen generation system. The oxygen-enriched body produced by the oxygen generation system from the air is delivered to the room during the operation of the air conditioner to adjust the oxygen content of the indoor air and improve the user experience. The pressure swing adsorption (PSA) oxygen generation system, based on the principle of pressure swing adsorption, is the most frequently used high-efficiency oxygen separation system in existing oxygen-generating air conditioners. In this system, the pressure of the compressed air and the range of pressure fluctuations directly affect the oxygen separation efficiency and the service life of the equipment.

[0003] In existing technologies, pressure swing adsorption (PSA) oxygen generation systems typically only have one pressure sensor installed inside to detect the internal gas pressure. The air supply pressure of the air compressor is adjusted accordingly based on the pressure sensor's readings to ensure that the overall gas pressure within the PSA oxygen generation system is appropriate and the pressure fluctuation range is relatively stable. This improves the operational stability (stable oxygen production) of the PSA oxygen generation system and extends its service life.

[0004] However, the aforementioned traditional pressure control methods are actually unreliable and prone to local overpressure risks. Specifically, if the oxygen generation system experiences problems such as pipeline blockage, silencer blockage, or valve jamming, the pressure sensor cannot immediately detect the pressure change at the overpressure location due to the gas isolation of the internal devices and the lag in gas pressure changes. If the air compressor continues to increase its gas supply pressure at this time, it may cause the molecular sieve inside the oxygen generation tower to pulverize or the oxygen generation tower to deform, thereby affecting the operational stability of the oxygen generation system. In severe cases, it may even lead to complete damage to the molecular sieve and the oxygen generation tower, seriously affecting the service life of the oxygen generation system. Summary of the Invention

[0005] The main objective of this invention is to provide an oxygen generation system control method, an oxygen generation system, and an air conditioner, in order to solve the problems of low operational stability and short service life of oxygen generation systems in existing air conditioners.

[0006] To achieve the above objectives, according to one aspect of the present invention, an oxygen generation system control method is provided, comprising:

[0007] Obtain air pressure parameter information at multiple locations to be detected;

[0008] Based on the air pressure parameter information, a depressurization operation is performed at the location to be tested to adjust the air pressure value at the location to be tested;

[0009] The multiple locations to be tested include a first location to be tested, a second location to be tested, and a third location to be tested. The first location to be tested is located between the gas supply device of the oxygen generation system and the gas supply silencer of the oxygen generation system. The second location to be tested is located between the gas supply silencer and the oxygen generation device of the oxygen generation system. The third location to be tested is located between the oxygen generation device and the exhaust silencer of the oxygen generation system.

[0010] Furthermore, the oxygen generation system control method also includes:

[0011] Based on the air pressure parameters at the second detection location, adjust the switching cycle time of the oxygen generator's reversing valve.

[0012] Furthermore, the gas pressure parameter information includes the gas pressure change rate value. Based on the gas pressure parameter information at the second detection location, the method for adjusting the switching cycle time of the oxygen generator's reversing valve includes performing the following target operations:

[0013] Determine the relationship between the gas pressure change rate at the second detection location and the preset gas pressure change rate range;

[0014] If the rate of change of gas pressure at the second detection position is greater than or equal to the maximum value of the preset gas pressure change rate range, then reduce the switching cycle time of the switching valve.

[0015] If the rate of change of gas pressure at the second detection position is less than or equal to the minimum value of the preset gas pressure change rate range, then increase the switching cycle time of the reversing valve.

[0016] If the rate of change of gas pressure at the second detection location is within the preset range of the rate of change of gas pressure, then the switching cycle time of the switching valve is kept constant.

[0017] Furthermore, after increasing the switching cycle time of the reversing valve, the oxygen generation system control method also includes:

[0018] Reacquire the gas pressure change rate at the second detection location and execute the target operation;

[0019] If the reversing cycle time is adjusted to be greater than or equal to the preset reversing cycle time, the oxygen generating device is deemed to be damaged.

[0020] Furthermore, the air pressure parameter information also includes a time series diagram of the air pressure values, and the oxygen generation system control method also includes:

[0021] Based on the time sequence diagram of the air pressure value at the third test location, determine whether the exhaust muffler is damaged.

[0022] Furthermore, based on the time-series diagram of the air pressure values ​​at the third detection location, the methods for determining whether the exhaust muffler is damaged include:

[0023] Determine whether a time series diagram has a periodicity;

[0024] If the timing diagram is periodic, it indicates that the exhaust muffler is operating normally;

[0025] If the time sequence diagram is non-periodic and the minimum air pressure value in the time sequence diagram is greater than the standard atmospheric pressure value, then the exhaust muffler is considered to be damaged.

[0026] Furthermore, after determining that the exhaust muffler is damaged, the oxygen generation system control methods also include:

[0027] Adjust the valve position of the reversing valve of the oxygen generator so that the gas supply device, the oxygen generator and the exhaust silencer are connected in sequence, so that the gas supply device can be used to purge the exhaust silencer.

[0028] Furthermore, the air pressure parameter information also includes air pressure values, and the oxygen generation system control method also includes:

[0029] Determine the relationship between the air pressure value at the first detection location and the preset air pressure range;

[0030] If the air pressure value at the first detection location is greater than or equal to the maximum value of the preset air pressure range, then increase the operating power of the air supply device;

[0031] If the air pressure value at the first detection location is less than or equal to the minimum value of the preset air pressure range, then reduce the operating power of the air supply device;

[0032] If the air pressure value at the first detection location is within the preset air pressure value range, the operating power of the air supply device will be kept constant.

[0033] Furthermore, the air pressure parameter information also includes air pressure values. Methods for adjusting the air pressure value at the location to be detected by depressurizing based on the air pressure parameter information include:

[0034] Determine the relationship between the air pressure value at the first detection location and the preset threshold. If the air pressure value at the first detection location is greater than or equal to the preset threshold, then perform a depressurization operation at the first detection location.

[0035] Determine the relationship between the air pressure value at the second detection location and the preset threshold. If the air pressure value at the second detection location is greater than or equal to the preset threshold, then perform a depressurization operation at the second detection location.

[0036] Determine the relationship between the air pressure value at the third detection location and the preset threshold. If the air pressure value at the third detection location is greater than or equal to the preset threshold, then perform a depressurization operation at the third detection location.

[0037] Furthermore, the multiple detection locations also include a fourth detection location, located outside the oxygen generation system, to obtain atmospheric pressure values. The oxygen generation system control method also includes:

[0038] Determine the relationship between the atmospheric pressure value and the preset atmospheric pressure value;

[0039] If the atmospheric pressure is lower than the preset atmospheric pressure, the operating power of the gas supply device will be increased.

[0040] According to another aspect of the present invention, an oxygen generation system is provided, which is controlled by the above-described oxygen generation system control method. The oxygen generation system includes: a gas supply device, a gas supply silencer, an oxygen generation device, and an exhaust silencer interconnected by pipelines. The oxygen generation device includes a molecular sieve structure and a first reversing valve connected to the molecular sieve structure. There are at least two molecular sieve structures. The gas supply silencer and the exhaust silencer are both connected to the first reversing valve. The first reversing valve is used to adjust the communication state between the at least two molecular sieve structures, the gas supply silencer, and the exhaust silencer. A first pressure detection element, a pipeline between the gas supply device and the gas supply silencer, and a gas supply... The pipeline between the air silencer and the first reversing valve, and the pipeline between the first reversing valve and the exhaust silencer, are each equipped with a first pressure detection element. The first pressure detection element is used to detect the air pressure parameters in the pipeline at its setting location. A second pressure detection element is used to detect the atmospheric pressure value. A pressure relief element is connected to the pipeline and is used to relieve the pressure of the gas in the pipeline. The pressure relief element is connected to the first pressure detection element. There are multiple pressure relief elements, and each of the multiple pressure relief elements is set in a one-to-one correspondence with a number of first pressure detection elements. A control module is connected to the air supply device, the pressure relief elements, the first pressure detection elements, the first reversing valve, and the second pressure detection elements.

[0041] According to another aspect of the present invention, an air conditioner is provided, which includes the oxygen generation system described above.

[0042] According to the technical solution of the present invention, the oxygen generation system control method includes: acquiring air pressure parameter information at multiple locations to be detected; performing a pressure relief operation at the locations to be detected based on the air pressure parameter information to adjust the air pressure value at the locations to be detected; wherein, the multiple locations to be detected include a first location to be detected, a second location to be detected, and a third location to be detected, the first location to be detected is located between the air supply device of the oxygen generation system and the air supply silencer of the oxygen generation system, the second location to be detected is located between the air supply silencer and the oxygen generation device of the oxygen generation system, and the third location to be detected is located between the oxygen generation device and the exhaust silencer of the oxygen generation system. In contrast to existing technologies that rely on pressure detection at a single location for control, this application specifically sets up three detection locations and performs real-time pressure relief operations based on the pressure parameters at these three locations. This setup not only enables rapid and accurate acquisition of local pressure parameters, ensuring timely response to the pressure relief operation, but also completely avoids the possibility of overpressure operation (deformation or even damage) by completely eliminating the risk of overpressure. This significantly improves the operational stability of the oxygen generation system, extends its service life, and solves the problems of low operational stability and short service life of existing air conditioner oxygen generation systems, thereby enhancing the user experience. Attached Figure Description

[0043] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0044] Figure 1 A partial flowchart of an embodiment of the oxygen generation system control method according to the present invention is shown;

[0045] Figure 2 It shows that according to Figure 1 A partial flowchart of the oxygen generation system control method in the document;

[0046] Figure 3 It shows that according to Figure 1 A partial flowchart of the oxygen generation system control method in the document;

[0047] Figure 4 It shows that according to Figure 1 A partial flowchart of the oxygen generation system control method in the document;

[0048] Figure 5 It shows that according to Figure 1 A partial flowchart of the oxygen generation system control method in the document;

[0049] Figure 6 A schematic diagram of the overall structure of an embodiment of the oxygen generation system according to the present invention is shown.

[0050] The above figures include the following reference numerals:

[0051] 1. Gas supply device; 2. Gas supply silencer; 3. Oxygen generator; 31. Molecular sieve structure; 32. First reversing valve; 4. Exhaust silencer; 5. First pressure detection device; 6. Pressure relief device; 7. Filter device; 8. Dehumidification device; 9. Second reversing valve; 10. Check valve; 11. Storage device; 12. Buffer device; 13. Flow valve; 14. Storage device pressure relief valve. Detailed Implementation

[0052] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0053] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0054] In this invention, unless otherwise stated, directional terms such as "up" and "down" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" are generally used in relation to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0055] To address the issues of low operational stability and short service life of oxygen generation systems in existing air conditioners, this application provides an oxygen generation system control method, an oxygen generation system, and an air conditioner.

[0056] like Figures 1 to 5 As shown, the oxygen generation system control method includes:

[0057] Acquire air pressure parameter information at multiple locations to be detected;

[0058] Based on the air pressure parameter information, a depressurization operation is performed at the location to be tested to adjust the air pressure value at the location to be tested;

[0059] The multiple locations to be tested include a first location to be tested, a second location to be tested, and a third location to be tested. The first location to be tested is located between the gas supply device 1 of the oxygen generation system and the gas supply silencer 2 of the oxygen generation system. The second location to be tested is located between the gas supply silencer 2 and the oxygen generation device 3 of the oxygen generation system. The third location to be tested is located between the oxygen generation device 3 and the exhaust silencer 4 of the oxygen generation system.

[0060] Applying the technical solution of this embodiment, the oxygen generation system control method includes: acquiring air pressure parameter information at multiple locations to be detected; performing a pressure relief operation at the locations to be detected based on the air pressure parameter information to adjust the air pressure value at the locations to be detected; wherein, the multiple locations to be detected include a first location to be detected, a second location to be detected, and a third location to be detected, the first location to be detected is located between the air supply device 1 of the oxygen generation system and the air supply silencer 2 of the oxygen generation system, the second location to be detected is located between the air supply silencer 2 and the oxygen generation device 3 of the oxygen generation system, and the third location to be detected is located between the oxygen generation device 3 and the exhaust silencer 4 of the oxygen generation system. In contrast to existing technologies that rely on single-location pressure detection for control, this embodiment specifically sets up three detection locations and performs real-time pressure relief operations based on the pressure parameters at these three locations. This setup not only enables rapid and accurate acquisition of local pressure parameters, ensuring timely response to the pressure relief operation, but also completely avoids the possibility of overpressure operation (deformation or even damage) by completely eliminating the risk of overpressure. This significantly improves the operational stability of the oxygen generation system, extends its service life, and solves the problems of low operational stability and short service life of existing air conditioner oxygen generation systems, thereby enhancing the user experience.

[0061] In this embodiment, the gas pressure parameter information includes the gas pressure change rate value. The method for adjusting the switching cycle time of the reversing valve of the oxygen generator 3 based on the gas pressure parameter information at the second detection location includes performing the following target operation:

[0062] Determine the relationship between the gas pressure change rate at the second detection location and the preset gas pressure change rate range;

[0063] If the rate of change of gas pressure at the second detection position is greater than or equal to the maximum value of the preset gas pressure change rate range, then reduce the switching cycle time of the switching valve.

[0064] If the rate of change of gas pressure at the second detection position is less than or equal to the minimum value of the preset gas pressure change rate range, then increase the switching cycle time of the reversing valve.

[0065] If the rate of change of gas pressure at the second detection location is within the preset range of the rate of change of gas pressure, then the switching cycle time of the switching valve is kept constant.

[0066] In this way, by adjusting the switching time of the reversing valve of the oxygen generator 3 in real time, it is possible to avoid insufficient pressurization of the molecular sieve structure 31 in the oxygen generator 3 (too small gas pressure change rate), which would result in insufficient adsorption cycle of the molecular sieve structure 31 and thus extend the service life of the molecular sieve structure 31. On the other hand, it is also possible to avoid ineffective pressurization work (i.e., too large gas pressure change rate), so that the nitrogen adsorption process of the molecular sieve structure 31 in the oxygen generator 3 is already saturated before the reversing valve switches, thereby reducing the operating power consumption of the oxygen generator 3.

[0067] Specifically, the oxygen generating device 3 is equipped with two molecular sieve structures 31. The operating states of the two molecular sieve structures 31 are repeatedly switched by adjusting the passage state through a reversing valve (i.e., one molecular sieve structure 31 performs pressurized adsorption, while the other performs depressurized desorption; the two molecular sieve structures 31 alternately switch operating states to achieve continuous generation of oxygen-enriched gas; see the oxygen generating system for details regarding the oxygen generating device 3). The time interval between each switch is the switching cycle time of the reversing valve. When the molecular sieve structure 31 is in the depressurized desorption state, it is connected to the outside environment to reduce pressure to atmospheric pressure. When the depressurized desorption molecular sieve structure 31 is switched to the pressurized adsorption state, high-pressure gas is introduced into it to increase the pressure. During this process, the rate of change of gas pressure at the third detection location should... The pressure fluctuates within a relatively fixed range, while the rate of change of gas pressure (pressure rise speed) and the switching cycle time (pressure rise duration) are the core factors affecting the generation of oxygen-enriched gas by the molecular sieve structure 31. (The rate of change of gas pressure determines the intensity of collisions between gas molecules and the molecular sieve structure 31, which in turn determines the time it takes for the molecular sieve structure 31 to reach a relatively saturated adsorption state, while the switching cycle time determines the total adsorption time of the molecular sieve structure 31.) If the rate of change of gas pressure is too large, it means that the molecular sieve structure 31 will reach a relatively saturated adsorption state before the next switching. That is, after reaching the relatively saturated adsorption state, the nitrogen adsorption capacity of the molecular sieve structure 31 is greatly reduced, and the gas supply device 1 is doing ineffective work. Therefore, the switching cycle time should be reduced at this time to reduce the overall energy consumption of the oxygen generation system. Meanwhile, if the rate of change of gas pressure is too small, it means that the adsorption rate of the molecular sieve structure 31 is too small. On the one hand, the molecular sieve structure 31 does not fully adsorb nitrogen during the switching cycle time; on the other hand, its internal pressure is not increased to a sufficiently high level. Therefore, the switching cycle time should be extended to ensure that the gas can flow fully into the molecular sieve structure 31. This not only improves the oxygen production efficiency of the oxygen generating device 3, but also avoids the molecular sieve structure 31 from always being locally adsorbed, which would greatly shorten its service life under the same oxygen-enriched gas generation conditions.

[0068] Specifically, taking a 5L / min oxygen generation system as an example, the switching cycle time is usually preset to 5 seconds, and the preset gas pressure change rate range is usually between 12kPa / s and 35kPa / s.

[0069] In this embodiment, if the rate of change of gas pressure at the second detection location is less than or equal to the minimum value of the preset range of gas pressure change rates, the switching cycle time of the switching valve is increased by 1 second.

[0070] In this embodiment, after increasing the switching cycle time of the switching valve, the oxygen generation system control method further includes:

[0071] Reacquire the gas pressure change rate at the second detection location and execute the target operation;

[0072] If the reversing cycle time is adjusted to be greater than or equal to the preset reversing cycle time, the oxygen generator 3 is deemed to be damaged.

[0073] In this way, the above settings provide a basic logic for judging whether the oxygen generator 3 is damaged, so as to grasp the actual working status of the oxygen generator 3 and carry out timely and rapid maintenance, thereby improving the user experience.

[0074] In this embodiment, the preset commutation cycle time is 9 seconds.

[0075] Specifically, the core reason why the gas pressure change rate value is still too small (less than or equal to the preset minimum gas pressure change rate value) after multiple adjustments is that there is basically no or very little gas entering the oxygen generator 3 at the second detection location, resulting in only a small fluctuation in the gas pressure at the second detection location. There are two possible causes for this situation: one is that the reversing valve is damaged, i.e., the reversing valve is stuck or the opening is reduced, which prevents the gas from flowing into the molecular sieve structure 31; the other is that the molecular sieve structure 31 is severely aged (mainly pulverized), and the pulverized particles block the molecular sieve structure 31, preventing the gas from flowing into the molecular sieve structure 31. In other words, the fact that the gas pressure change rate value is still too small after multiple adjustments actually means that the oxygen generator 3 is damaged.

[0076] In this embodiment, when it is determined that the oxygen generator 3 is damaged, a corresponding alarm signal can also be sent (such as the indicator light on the indoor unit of the air conditioner flashing, or sending the corresponding alarm information to the user's mobile phone through the software that comes with the air conditioner) to remind the user to inspect the oxygen generator 3, so as to avoid the oxygen generator 3 from failing to operate normally and causing the oxygen generation function of the air conditioner to fail, thereby improving the operational stability of the oxygen generation system.

[0077] In this embodiment, the air pressure parameter information also includes a time-series graph of the air pressure values, and the oxygen generation system control method further includes:

[0078] Based on the time sequence diagram of the air pressure value at the third test location, determine whether the exhaust muffler 4 is damaged.

[0079] Specifically, based on the time series diagram of the air pressure value at the third detection location, the methods for determining whether the exhaust muffler 4 is damaged include:

[0080] Determine whether a time series diagram has periodicity;

[0081] If the timing diagram is periodic, then the exhaust muffler 4 is considered to be operating normally;

[0082] If the timing diagram is non-periodic and the minimum air pressure value in the timing diagram is greater than the standard atmospheric pressure value, then the exhaust muffler 4 is determined to be damaged.

[0083] In this way, the above settings provide a basic logic for judging whether the exhaust muffler 4 is damaged, so as to grasp the actual working status of the exhaust muffler 4 and carry out timely and quick maintenance, thereby improving the user experience.

[0084] Specifically, the time sequence diagram is a waveform diagram of the air pressure value versus time at the third location to be detected.

[0085] Specifically, as the working states of the two molecular sieve structures 31 continuously switch, the gas pressure value at the third detection location should exhibit periodic changes. That is, whenever the molecular sieve structure 31 in the pressurized adsorption state is switched to the depressurized desorption state, the gas pressure value at the third detection location will show a waveform of sudden increase followed by gradual decrease to atmospheric pressure. This also means that the exhaust silencer 4 is operating normally. However, if the time sequence diagram is non-periodic and the minimum gas pressure value in the time sequence diagram is greater than the standard atmospheric pressure value, it means that the molecular sieve structure 31 has not completely exhausted gas during the switching cycle and the gas pressure change is irregular. In fact, this is mainly because the pulverized particles of the molecular sieve structure 31 block the exhaust silencer 4. Through the above logical judgment, the damage status of the exhaust silencer 4 can be quickly and timely grasped so as to carry out timely repairs. This can avoid the phenomenon that the molecular sieve structure 31 cannot generate oxygen-rich gas normally or even suffers damage due to overpressure operation because it has not completely exhausted gas, thereby extending the service life of the molecular sieve structure 31 and improving the operational stability of the oxygen generation system.

[0086] In this embodiment, after determining that the exhaust muffler 4 is damaged, the oxygen generation system control method further includes:

[0087] Adjust the valve position of the reversing valve of the oxygen generator 3 so that the gas supply device 1, the oxygen generator 3 and the exhaust silencer 4 are connected in sequence, so that the gas supply device 1 can be used to purge the exhaust silencer 4.

[0088] In this way, the above configuration realizes the self-cleaning function of the exhaust muffler 4. That is, when the oxygen generation system is running normally, only the two molecular sieve structures 31 are connected to the exhaust muffler 4 and the gas supply device 1 respectively. There is no connection between the gas supply device 1 and the exhaust muffler 4. Due to the limited internal gas of the molecular sieve structure 31 (and the rapid effect of its internal gas pressure after being connected to the exhaust muffler 4), it cannot actually produce a purging effect on the exhaust muffler 4. In this embodiment, after determining that the exhaust muffler 4 is damaged, the valve position of the reversing valve is adjusted to realize the sequential connection between the gas supply device 1, one molecular sieve structure 31, the other molecular sieve structure 31 and the exhaust muffler 4, thereby realizing the "common pressure purging" function between the two molecular sieve structures 31, so that the high-pressure gas can continuously flow to the exhaust muffler 4, thereby realizing the self-cleaning function of the oxygen generation system and improving the user experience.

[0089] In this embodiment, after the above-mentioned purging procedure has been running for a certain period of time, the oxygen generation system will switch back to normal operation and correspondingly acquire the timing diagram of the third detection location again. If it is still determined that the exhaust muffler 4 is damaged at this time, it means that the exhaust muffler 4 is severely blocked and its exhaust capacity cannot be restored by the purging function. In this case, a corresponding alarm signal can be sent (such as the indicator light on the indoor unit of the air conditioner flashing, or sending the corresponding alarm information to the user's mobile phone through the software that is compatible with the air conditioner) to remind the user to inspect the exhaust muffler 4.

[0090] In this embodiment, the air pressure parameter information also includes air pressure values, and the oxygen generation system control method further includes:

[0091] Determine the relationship between the air pressure value at the first detection location and the preset air pressure range;

[0092] If the air pressure value at the first detection location is greater than or equal to the maximum value of the preset air pressure range, then increase the operating power of the air supply device 1;

[0093] If the air pressure value at the first detection location is less than or equal to the minimum value of the preset air pressure range, then reduce the operating power of the air supply device 1.

[0094] If the air pressure value at the first detection location is within the preset air pressure value range, the operating power of the air supply device 1 will be kept constant.

[0095] In this way, the above settings enable real-time adjustment of the gas supply pressure parameter of the gas supply device 1. As the overall operating gas source of the oxygen production system, the real-time adjustment of the gas supply device 1 can ensure that the gas pressure value in the oxygen production system is appropriate and relatively stable to the greatest extent, which helps to improve the operational stability of the oxygen production system.

[0096] In this embodiment, the preset air pressure value range is typically between 0.1 MPa and 0.7 MPa.

[0097] In this embodiment, if the air pressure value at the first detection location is greater than or equal to the maximum value of the preset air pressure range, it means that the air supply silencer 2 is blocked. While reducing the operating power of the air supply device 1 to reduce its air supply pressure value, thereby avoiding damage to the air supply silencer 2 due to overpressure operation and extending the service life of the air supply silencer 2, a corresponding alarm signal can be sent simultaneously (such as the indicator light on the indoor unit of the air conditioner flashing, or sending the corresponding alarm information to the user's mobile phone through the software that is compatible with the air conditioner) to remind the user to inspect the air supply silencer 2.

[0098] Optionally, when increasing the operating power of the gas supply device 1, the operating power of the gas supply device 1 is usually increased to 1.2 times the current operating power.

[0099] In this embodiment, if the air pressure value at the first detection location is still less than or equal to the minimum value of the preset air pressure range after the operating power of the air supply device 1 is increased, there may be two reasons: one is that the filter device 7 or the dehumidifier 8 is blocked, that is, the air intake of the air supply device 1 cannot meet its normal working requirements, resulting in its air supply pressure value always being too low; the other is that the air supply device 1 itself is damaged and cannot perform normal air compression work. In this case, a corresponding alarm signal can be sent simultaneously (such as the indicator light on the indoor unit of the air conditioner flashing, or sending the corresponding alarm information to the user's mobile phone through the software that comes with the air conditioner) to remind the user to inspect the air supply device 1, the filter device 7 and the dehumidifier 8.

[0100] In this embodiment, the air pressure parameter information also includes air pressure values. The method for adjusting the air pressure value at the location to be detected by depressurizing based on the air pressure parameter information includes:

[0101] Determine the relationship between the air pressure value at the first detection location and the preset threshold. If the air pressure value at the first detection location is greater than or equal to the preset threshold, then perform a depressurization operation at the first detection location.

[0102] Determine the relationship between the air pressure value at the second detection location and the preset threshold. If the air pressure value at the second detection location is greater than or equal to the preset threshold, then perform a depressurization operation at the second detection location.

[0103] Determine the relationship between the air pressure value at the third detection location and the preset threshold. If the air pressure value at the third detection location is greater than or equal to the preset threshold, then perform a depressurization operation at the third detection location.

[0104] In this way, the above settings can prevent overpressure operation of the air supply silencer 2 corresponding to the first detection position, the oxygen generating device 3 corresponding to the second detection position, and the exhaust silencer 4 corresponding to the third detection position, thereby maximizing the service life of the above devices.

[0105] Optionally, the preset threshold is 0.7 MPa, and the specific setting parameters can be adjusted accordingly based on the actual operating pressure load limit of the oxygen generation system.

[0106] In this embodiment, the plurality of locations to be detected also includes a fourth location to be detected, which is located outside the oxygen generation system to obtain atmospheric pressure values. The oxygen generation system control method further includes:

[0107] Determine the relationship between the current atmospheric pressure value and the preset atmospheric pressure value;

[0108] If the atmospheric pressure is lower than the preset atmospheric pressure, the operating power of the gas supply device 1 will be increased.

[0109] In this way, the above-mentioned settings enable the gas supply pressure of the gas supply device 1 to be further matched with atmospheric pressure to adapt to the low-pressure environment of the plateau, thereby improving the versatility and operational stability of the oxygen production system.

[0110] Specifically, normal atmospheric pressure is approximately 101.325 kPa, the pressure at an altitude of 1000 meters is approximately 89.87 kPa, the pressure at an altitude of 2000 meters is approximately 79.72 kPa, the pressure at an altitude of 3000 meters is approximately 70.71 kPa, and the pressure at an altitude of 4000 meters is approximately 62.48 kPa. As the altitude increases, the gradually decreasing atmospheric pressure cannot support the normal operation of the gas supply device 1 (i.e., under the same operating power, the gas supply pressure value of the gas supply device 1 will decrease). At this time, the operating power of the gas supply device 1 can be increased and the maximum value of the preset gas pressure range can be adjusted to ensure that the gas supply device 1 can operate at a higher power.

[0111] The oxygen generation system control method described in this embodiment has at least the following advantages:

[0112] 1. Implement multi-location local pressure detection and configure corresponding pressure relief operations to completely eliminate damage caused by overpressure operation of the core components of the oxygen generation system, and greatly ensure the service life of each component.

[0113] 2. Damage detection logic for gas supply device 1, gas supply silencer 2, oxygen generator 3, exhaust silencer 4, filter device 7 and dehumidification device 8, to ensure that damage to the above devices can be detected in time, so as to facilitate timely maintenance and thus improve the operational stability of the oxygen generation system.

[0114] 3. The adaptive oxygen production capability in high-altitude environments greatly enhances the versatility of air conditioners using corresponding oxygen production systems.

[0115] 4. The operating power of the gas supply device 1 is adjusted in real time to ensure that the internal gas pressure of the oxygen production system is appropriate and relatively stable, thereby improving the operational stability of the oxygen production system.

[0116] 5. The adaptive adjustment of the reversing valve's reversing cycle time helps reduce overall power consumption, extend the service life of the molecular sieve structure, and improve oxygen production efficiency.

[0117] like Figure 6 As shown, this application also provides an oxygen generation system. The oxygen generation system is controlled using the above-described oxygen generation system control method. The oxygen generation system includes a gas supply device 1, a gas supply silencer 2, an oxygen generation device 3, and an exhaust silencer 4, which are connected sequentially through pipelines. The oxygen generation device 3 includes a molecular sieve structure 31 and a first reversing valve 32 connected to the molecular sieve structure 31. There are at least two molecular sieve structures 31. The gas supply silencer 2 and the exhaust silencer 4 are both connected to the first reversing valve 32. The first reversing valve 32 is used to adjust the connection state between at least two molecular sieve structures 31, the gas supply silencer 2, and the exhaust silencer 4. The pipelines between the gas supply device 1 and the gas supply silencer 2, the pipelines between the gas supply silencer 2 and the first reversing valve 32, and the pipelines between the first reversing valve 32 and the exhaust silencer 4 are all equipped with first pressure detection elements 5. The first pressure detection elements 5 are used to detect the gas pressure parameters in the pipeline at their respective locations. The second pressure sensor is used to detect atmospheric pressure. The pressure relief component 6 is connected to the pipeline and is used to relieve pressure on the gas within the pipeline. The pressure relief component 6 is connected to the first pressure sensor 5. There are multiple pressure relief components 6, each corresponding to one of the multiple first pressure sensor 5s. The control module is connected to the gas supply device 1, the pressure relief components 6, the first pressure sensor 5, the first directional valve 32, and the second pressure sensor.

[0118] In this embodiment, the first pressure detection element 5 installed on the pipeline between the gas supply device 1 and the gas supply silencer 2 is used to detect the gas pressure parameter information at the first detection position; the first pressure detection element 5 installed on the pipeline between the gas supply silencer 2 and the first reversing valve 32 is used to detect the gas pressure parameter information at the second detection position; and the first pressure detection element 5 installed on the pipeline between the first reversing valve 32 and the exhaust silencer 4 is used to detect the gas pressure parameter information at the third detection position.

[0119] In this embodiment, the air supply device 1 is an air compressor, which is capable of supplying high-pressure air.

[0120] In this embodiment, the first reversing valve 32 has two electrically controlled four-way valves and two molecular sieve structures 31. During the normal operation of the oxygen generation system, the electrically controlled four-way valve controls one molecular sieve structure 31 to connect with the gas supply device 1. The high-pressure air supplied by the gas supply device 1 is introduced into the molecular sieve structure 31 to realize the pressurized adsorption process (adsorption of nitrogen) of the molecular sieve structure 31. The generated oxygen-rich gas is then introduced into the indoor unit of the air conditioner through the subsequent structure, and then into the room. At the same time, the electronically controlled four-way valve also controls another molecular sieve structure 31 to connect with the exhaust muffler 4. The exhaust muffler 4 is actually connected to the atmosphere to realize the depressurization desorption process (releasing nitrogen) of the molecular sieve structure 31. After the reversal cycle time, the two molecular sieve structures 31 switch their connection relationship. The molecular sieve structure 31 that was originally performing pressure adsorption is connected to the exhaust muffler 4 to realize depressurization desorption, while the molecular sieve structure 31 that was originally performing depressurization desorption is connected to the gas supply device 1 to realize pressure adsorption, thereby ensuring that oxygen-enriched gas can be continuously supplied to the indoor unit of the air conditioner.

[0121] In this embodiment, the oxygen generation system also includes a second reversing valve 9, a storage device 11, a buffer device 12, and a flow valve 13. The second reversing valve 9 is an electrically controlled three-way valve. The outlet of the molecular sieve structure 31 used to generate oxygen-enriched gas is connected to the second reversing valve 9. The other two valve ports of the second reversing valve 9 are respectively connected to the storage device 11 and the buffer device 12. The storage device 11 and the buffer device 12 are further connected to the oxygen outlet of the indoor unit of the air conditioner. A flow valve is provided between the oxygen outlet and the storage device 11 and the buffer device 12. During the normal operation of the oxygen generation system, the molecular sieve structure 31 used to generate oxygen-enriched gas is connected to the flow valve 13 and the oxygen outlet through the second reversing valve 9. The flow valve 13 is used to control the airflow at the oxygen outlet. Excess oxygen-enriched gas is collected in the storage device 11.

[0122] Specifically, when the second reversing valve 9 is switched to closed (the molecular sieve structure 31 is not connected to the storage device 11 and the buffer device 12), and the two molecular sieve structures 31 are connected to each other through the first reversing valve 32, the "co-pressure purging" function can be realized.

[0123] In this embodiment, the oxygen generation system also includes three one-way valves 10. One one-way valve 10 is provided between the second reversing valve 9 and the storage device 11, between the storage device 11 and the flow valve 13, and between the second reversing valve 9 and the buffer device 12. The one-way valve 10 between the second reversing valve 9 and the buffer device 12 is used to realize the one-way flow of oxygen-enriched gas to the buffer device 12. The one-way valve 10 between the storage device 11 and the flow valve 13 is used to realize the one-way flow of oxygen-enriched gas in the storage device 11 to the flow valve 13. The above two one-way valves 10 avoid the backflow problem of oxygen-enriched gas and help improve the operational stability of the oxygen generation system. Meanwhile, the two check valves 10 also cause a large amount of oxygen-enriched gas to stagnate in the pipeline after the flow valve 13 is closed. Therefore, a buffer device 12 is installed. The buffer device 12 is connected between the check valve 10 and the flow valve 13, which is located between the flow valve 13 and the storage device 11. After the flow valve 13 is closed, the oxygen in the pipeline can flow back into the buffer device 12 to reduce the gas pressure inside the pipeline and extend its service life. At the same time, the check valve 10 between the second reversing valve 9 and the buffer device 12 can prevent the oxygen-enriched gas at the buffer device 12 from flowing back into the second reversing valve 9, thereby extending the service life of the second reversing valve 9.

[0124] In this embodiment, the storage device 11 is also provided with a storage device pressure relief valve 14 connected thereto, which is used to relieve the pressure of the oxygen-enriched gas in the storage device 11 in order to avoid excessive internal pressure in the storage device 11, thereby extending the life of the storage device 11.

[0125] In this embodiment, a filter device 7 and a dehumidifier 8 are also provided at the air inlet of the air supply device 1. That is, outside air flows into the filter device 7 and the dehumidifier 8 in sequence before being introduced into the air supply device 1, so as to reduce the impurity content and humidity value in the gas introduced into the air supply device 1, thereby helping to extend the service life of the air supply device 1 and the molecular sieve structure 31 (the molecular sieve structure 31 will accelerate its pulverization phenomenon when operating in a high humidity air environment).

[0126] This application also provides an air conditioner that includes the oxygen generation system described above.

[0127] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0128] The oxygen generation system control method includes: acquiring air pressure parameter information at multiple locations to be detected; performing a pressure relief operation at the locations to be detected based on the air pressure parameter information to adjust the air pressure value at the locations to be detected; wherein, the multiple locations to be detected include a first location to be detected, a second location to be detected, and a third location to be detected, the first location to be detected being located between the air supply device of the oxygen generation system and the air supply silencer of the oxygen generation system, the second location to be detected being located between the air supply silencer and the oxygen generation device of the oxygen generation system, and the third location to be detected being located between the oxygen generation device and the exhaust silencer of the oxygen generation system. In contrast to existing technologies that rely on pressure detection at a single location for control, this application specifically sets up three detection locations and performs real-time pressure relief operations based on the pressure parameters at these three locations. This setup not only enables rapid and accurate acquisition of local pressure parameters, ensuring timely response to the pressure relief operation, but also completely avoids the possibility of overpressure operation (deformation or even damage) by completely eliminating the risk of overpressure. This significantly improves the operational stability of the oxygen generation system, extends its service life, and solves the problems of low operational stability and short service life of existing air conditioner oxygen generation systems, thereby enhancing the user experience.

[0129] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0130] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0131] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0132] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for controlling an oxygen generation system, characterized in that, include: Obtain air pressure parameter information at multiple locations to be detected; Based on the air pressure parameter information, a depressurization operation is performed at the location to be detected to adjust the air pressure value at the location to be detected; Among them, the multiple locations to be detected include a first location to be detected, a second location to be detected, and a third location to be detected. The first location to be detected is located between the gas supply device (1) of the oxygen generation system and the gas supply silencer (2) of the oxygen generation system. The second location to be detected is located between the gas supply silencer (2) and the oxygen generation device (3) of the oxygen generation system. The third location to be detected is located between the oxygen generation device (3) and the exhaust silencer (4) of the oxygen generation system. Based on the air pressure parameter information at the second detection location, adjust the switching cycle time of the switching valve of the oxygen generating device (3); The gas pressure parameter information includes the gas pressure change rate value. The method for adjusting the switching cycle time of the reversing valve of the oxygen generator (3) based on the gas pressure parameter information at the second detection location includes performing the following target operations: Determine the relationship between the gas pressure change rate at the second detection location and the preset gas pressure change rate range; If the rate of change of gas pressure at the second detection location is greater than or equal to the maximum value of the preset gas pressure change rate range, then the switching cycle time of the switching valve is reduced. If the rate of change of gas pressure at the second detection location is less than or equal to the minimum value of the preset range of gas pressure change rates, then the switching cycle time of the switching valve is increased. If the rate of change of gas pressure at the second detection location is within the preset range of the rate of change of gas pressure, then the switching cycle time of the switching valve is kept constant.

2. The oxygen generation system control method according to claim 1, characterized in that, After increasing the switching cycle time of the switching valve, the oxygen generation system control method further includes: Reacquire the gas pressure change rate at the second detection location and execute the target operation; If the reversing cycle time is adjusted to be greater than or equal to the preset reversing cycle time, then the oxygen generating device (3) is determined to be damaged.

3. The oxygen generation system control method according to claim 1, characterized in that, The pressure parameter information also includes a time-series graph of the pressure values, and the oxygen generation system control method further includes: Based on the time sequence diagram of the air pressure value at the third detection location, determine whether the exhaust muffler (4) is damaged.

4. The oxygen generation system control method according to claim 3, characterized in that, The method for determining whether the exhaust muffler (4) is damaged based on the time sequence diagram of the air pressure value at the third detection location includes: Determine whether the time sequence diagram has periodicity; If the timing diagram is periodic, then the exhaust muffler (4) is determined to be operating normally; If the timing diagram is non-periodic and the minimum air pressure value in the timing diagram is greater than the standard atmospheric pressure value, then the exhaust muffler (4) is determined to be damaged.

5. The oxygen generation system control method according to claim 4, characterized in that, After determining that the exhaust muffler (4) is damaged, the oxygen generation system control method further includes: Adjust the valve position of the reversing valve of the oxygen generating device (3) so that the gas supply device (1), the oxygen generating device (3) and the exhaust silencer (4) are connected in sequence, so that the gas supply device (1) can be used to purge the exhaust silencer (4).

6. The oxygen generation system control method according to claim 1, characterized in that, The air pressure parameter information also includes air pressure values, and the oxygen generation system control method further includes: Determine the relationship between the air pressure value at the first detection location and the preset air pressure range; If the air pressure value at the first detection location is greater than or equal to the maximum value of the preset air pressure range, then the operating power of the air supply device (1) is increased; If the air pressure value at the first detection location is less than or equal to the minimum value of the preset air pressure range, then reduce the operating power of the air supply device (1); If the air pressure value at the first detection location is within the preset air pressure value range, then the operating power of the air supply device (1) is kept constant.

7. The oxygen generation system control method according to claim 1, characterized in that, The air pressure parameter information also includes air pressure values. A method for adjusting the air pressure value at the location to be detected by depressurizing based on the air pressure parameter information includes: Determine the relationship between the air pressure value at the first detection location and a preset threshold. If the air pressure value at the first detection location is greater than or equal to the preset threshold, then perform a depressurization operation at the first detection location. Determine the relationship between the air pressure value at the second detection location and the preset threshold. If the air pressure value at the second detection location is greater than or equal to the preset threshold, then perform a depressurization operation at the second detection location. Determine the relationship between the air pressure value at the third detection location and the preset threshold. If the air pressure value at the third detection location is greater than or equal to the preset threshold, then perform a depressurization operation at the third detection location.

8. The oxygen generation system control method according to claim 1, characterized in that, The plurality of locations to be detected also includes a fourth location to be detected, the fourth location being located outside the oxygen generation system to obtain atmospheric pressure values, and the oxygen generation system control method further includes: Determine the relationship between the atmospheric pressure value and the preset atmospheric pressure value; If the atmospheric pressure value is less than the preset atmospheric pressure value, the operating power of the gas supply device (1) is increased.

9. An oxygen generation system, characterized in that, The oxygen generation system is controlled by the oxygen generation system control method according to any one of claims 1 to 8, and the oxygen generation system includes: The gas supply device (1), gas supply silencer (2), oxygen generator (3), and exhaust silencer (4) are interconnected by pipelines. The oxygen generator (3) includes a molecular sieve structure (31) and a first reversing valve (32) connected to the molecular sieve structure (31). There are at least two molecular sieve structures (31). The gas supply silencer (2) and the exhaust silencer (4) are both connected to the first reversing valve (32). The first reversing valve (32) is used to adjust the connection state between at least two of the molecular sieve structures (31), the gas supply silencer (2), and the exhaust silencer (4). The first pressure detection element (5) is provided in the pipeline between the gas supply device (1) and the gas supply silencer (2), the pipeline between the gas supply silencer (2) and the first reversing valve (32), and the pipeline between the first reversing valve (32) and the exhaust silencer (4). The first pressure detection element (5) is used to detect the gas pressure parameter information in the pipeline at its setting position. The second pressure sensing element is used to detect atmospheric pressure. Pressure relief component (6), the pressure relief component (6) is connected to the pipeline and is used to relieve the pressure of the gas in the pipeline. The pressure relief component (6) is connected to the first pressure detection component (5). There are multiple pressure relief components (6), and multiple pressure relief components (6) are arranged one-to-one with multiple first pressure detection components (5). The control module is connected to the gas supply device (1), the pressure relief component (6), the first pressure detection component (5), the first reversing valve (32), and the second pressure detection component.

10. An air conditioner, characterized in that, The air conditioner includes the oxygen generation system as described in claim 9.

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