Double-air-compressor type fresh air oxygen generator

Abstract

The invention relates to the technical field of fresh air oxygenerators, in particular to a double-air-compressor type fresh air oxygenerator which comprises a machine shell, an air inlet is formed in the top of the machine shell, a back-flushing air suction port and an air outlet are formed in the bottom of the machine shell, an oxygen outlet and a fresh air connector are formed in the two sides of the machine shell respectively, and a PSA oxygen generation system and a fresh air compressor assembly are arranged in the machine shell. The fresh air compressor assembly comprises a fresh air tank, a fresh air outlet electromagnetic valve, a pressure release valve, a back-flushing air outlet electromagnetic valve, a fresh air compressor body, a fresh air pipe, a fresh air suction electromagnetic valve and a back-flushing air suction electromagnetic valve; the other end of the back-flushing air suction electromagnetic valve is connected with the back-flushing air suction port, and the fresh air pipe extends to the outside through the fresh air connector. The fresh air system and the oxygen generation system are integrally designed, it is guaranteed that oxygen generation raw materials are fresh air all the time, and the oxygen generation efficiency and the oxygen purity are improved.

Description

Technical Field

[0001] The invention relates to the technical field of fresh air oxygen generators, in particular to a dual air compressor type fresh air oxygen generator. Background Art

[0002] The oxygen generator uses power as power, air as raw material, molecular sieve as adsorbent, and the principle of pressure swing adsorption separation (PSA) to directly separate oxygen and nitrogen in the air at room temperature to produce oxygen-enriched air with an oxygen concentration of ≥ 90% (V / V). The commonly used oxygen production system principle is PSA technology, which is generally designed with an air compressor. The air compressor sucks the filtered air around the oxygen generator into the interior for pressurization and outputs high-pressure air. The rear end is designed with an oxygen production solenoid valve and a pair of adsorption towers. The oxygen production solenoid valve controls the air circulation into the pair of adsorption towers for synchronous adsorption and desorption, outputs oxygen to the rear oxygen outlet pipeline, and discharges nitrogen to the outside of the oxygen generator.

[0003] Since oxygen concentrators are generally used indoors and are often in a relatively closed environment, the following situations may occur when users use oxygen concentrators: on the one hand, users continuously consume oxygen; on the other hand, the nitrogen discharged by the oxygen concentrator is always discharged into the indoor air, which causes the nitrogen content in the indoor air to continue to increase, thereby causing the nitrogen content in the air inhaled by the oxygen concentrator to increase, resulting in a decrease in oxygen production performance, resulting in insufficient output oxygen concentration. Summary of the invention

[0004] In order to solve the above technical problems, the present invention specifically adopts the following technical solutions.

[0005] A dual air compressor type fresh air oxygen generator is designed, comprising a casing, an air inlet is arranged at the top of the casing, a recoil air inlet and an air outlet are arranged at the bottom, an oxygen outlet and a fresh air interface are arranged at both sides of the casing, and a PSA oxygen production system and a fresh air compressor assembly are arranged inside the casing;

[0006] The PSA oxygen production system includes an oxygen production air compressor body, a cooling fan, an oxygen production solenoid valve connected to the oxygen production air compressor body outlet pipe, an adsorption tower, and a flow meter. The outlet pipe is connected to the oxygen outlet. The fresh air compressor assembly includes a fresh air tank connected to the oxygen production air compressor body inlet pipe, a fresh air outlet solenoid valve connected to the fresh air tank, a pressure relief valve arranged on the fresh air tank, a recoil outlet solenoid valve and a fresh air compressor body respectively connected to the fresh air outlet solenoid valve, a fresh air pipe and a fresh air intake solenoid valve respectively connected to the recoil outlet solenoid valve, and the fresh air intake solenoid valve is respectively connected to the recoil intake solenoid valve and the fresh air compressor body intake filter; the other end of the recoil intake solenoid valve is connected to the recoil intake port, and the fresh air pipe is extended to the outdoors through a fresh air interface.

[0007] Preferably, the fresh air outlet solenoid valve is connected to the recoil outlet solenoid valve and the fresh air compressor body respectively through a three-way pipe, the recoil outlet solenoid valve is connected to the fresh air intake solenoid valve and the fresh air duct respectively through a three-way pipe, and the fresh air intake solenoid valve is connected to the recoil intake solenoid valve and the air intake filter respectively through a three-way pipe.

[0008] Preferably, there are two heat dissipation fans, and the wind direction is set from top to bottom.

[0009] Preferably, the fresh air duct is connected to two branches, one of which is connected to an air conditioning outlet joint, and the other is connected to a sliding window outlet joint, and the air conditioning outlet joint and the sliding window outlet joint are respectively connected to outdoor air.

[0010] Preferably, the air conditioning outlet joint divides one route of the fresh air duct into multiple first branches, and each first branch can extend from the gap in the air conditioning outlet to the outdoors; the sliding window outlet joint divides the other route of the fresh air duct into multiple second branches, and the multiple second branches are all placed in the gap between one end of the sliding window and the wall.

[0011] Preferably, the plurality of second branch pipes are through holes respectively arranged at intervals in the connecting joint of the sliding window.

[0012] Preferably, the pressure relief pressure of the pressure relief valve on the fresh air tank is higher than the atmospheric pressure.

[0013] The beneficial effects of the present invention are:

[0014] 1. The present invention adopts a pre-start and operation phased working mode. In the pre-start stage, the fresh air compressor assembly can be started, the recoil suction solenoid valve and the recoil outlet solenoid valve can be opened, and the fresh air compressor inhales indoor air from the recoil suction port, and the gas is discharged to the outside through the fresh air duct after filtering, thereby effectively cleaning the duct, ensuring oxygen production efficiency and quality, and reducing energy consumption.

[0015] 2. Adopt the integrated design of fresh air system and oxygen production system to ensure that the raw material for oxygen production is always fresh air, thus improving the oxygen production efficiency and oxygen purity.

[0016] 3. Through the unique recoil cleaning mechanism and timely indoor exhaust mode, it can effectively remove indoor pollutants and improve the air quality of living or working environment.

[0017] 4. The design of the fresh air duct takes into account a variety of installation scenarios, such as the application of air-conditioning outlets and sliding window gaps, which facilitates installation in different environments and improves the versatility and convenience of the system.

[0018] 5. The pressure relief valve design of the fresh air tank ensures that the system can operate stably under any working conditions, avoids the risk of overpressure, and ensures the safety of equipment and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the structure of the present invention;

[0020] Figure 2 It is to show the bottom structure schematic diagram of the present invention;

[0021] Figure 3 and Figure 4 It is a schematic diagram of the internal structure of the present invention;

[0022] Figure 5 It is a schematic diagram of the cross-sectional structure of the air conditioner outlet joint;

[0023] Figure 6 It is a schematic diagram of the cross-sectional structure of the joint of the sliding window;

[0024] Figure 7 It is a working principle diagram of the pre-startup stage;

[0025] Figure 8 It is the working principle diagram of the operation stage;

[0026] The numbers in the figure are: 1 casing, 2 oxygen outlet, 3 flow meter, 4 air inlet, 5 fresh air duct, 6 air conditioning outlet joint, 61 first branch pipe, 7 air conditioning outlet, 8 sliding window, 9 sliding window joint, 91 second branch pipe, 92 through hole, 10 fresh air interface, 11 recoil air intake, 12 air outlet, 13 pressure relief valve, 14 fresh air tank, 15 cooling fan, 16 recoil air outlet solenoid valve, 17 fresh air intake solenoid valve, 18 fresh air outlet solenoid valve, 19 oxygen making air compressor body, 20 air intake filter, 21 recoil air intake solenoid valve, 22 fresh air air compressor body, 23 oxygen making air compressor body air intake pipe, 24 adsorption tower, 25 oxygen making solenoid valve, 26 oxygen making air compressor body air outlet pipe. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0028] Example 1

[0029] A dual air compressor fresh air oxygen generator, such as Figures 1 to 8 As shown, it includes a casing 1, an air inlet 4 is provided on the top of the casing 1, a recoil air inlet 11 and an air outlet 12 are provided on the bottom, an oxygen outlet 2 and a fresh air interface 10 are provided on two sides of the casing 1, and a PSA oxygen production system and a fresh air compressor assembly are provided inside the casing 1;

[0030] The PSA oxygen production system includes an oxygen production air compressor body 19, a cooling fan 15, an oxygen production solenoid valve 25 connected to the air outlet pipe of the oxygen production air compressor body 19, an adsorption tower 24, and a flow meter 3. The air outlet pipe is connected to the oxygen outlet 2. There are two cooling fans 15, and the wind direction is set from top to bottom, so that the airflow is always blown out from the upper side to the lower side. The heat generated by the air compressor is brought out to the outside of the casing through the airflow to ensure the temperature stability of the whole machine.

[0031] The fresh air compressor assembly includes a fresh air tank 14 connected to the air inlet pipe of the oxygen making air compressor body 19, a fresh air outlet solenoid valve 18 connected to the fresh air tank 14, a pressure relief valve 13 arranged on the fresh air tank 14, a recoil outlet solenoid valve 16 and a fresh air compressor body 22 respectively connected to the fresh air outlet solenoid valve 18 through a three-way pipe, a fresh air pipe 5 and a fresh air intake solenoid valve 17 respectively connected to the recoil outlet solenoid valve 16 through a three-way pipe, and the fresh air intake solenoid valve 17 is respectively connected to the recoil intake solenoid valve 21 and the fresh air compressor body 22 intake filter 20; the pressure relief pressure of the pressure relief valve 13 on the fresh air tank 14 is higher than the atmospheric pressure.

[0032] The other end of the recoil air suction solenoid valve 21 is connected to the recoil air suction port 11, and the fresh air pipe 5 is connected to the fresh air interface 10;

[0033] The fresh air duct 5 is connected to two branches, one of which is connected to the air-conditioning outlet joint 6, which divides one of the fresh air duct 5 into five first branches 61, and the pipe diameters of the five first branches 61 are small enough to extend from the gap in the air-conditioning outlet to the outdoors and connect with the outdoor air; the other branch is connected to the sliding window outlet joint 9, which divides the other of the fresh air duct 5 into six second branches 91. The sliding window outlet joint 9 is relatively long but very narrow, and can be placed in the gap between the sliding window and the wall when the sliding window is closed, and is connected with the outside air, and the six second branches 91 are respectively through holes 92 arranged at intervals in the sliding window outlet joint 9 to prevent the through holes 92 from always maintaining a gap after being squeezed by the sliding window.

[0034] Working principle: This dual air compressor fresh air oxygen generator achieves efficient oxygen production and indoor air circulation renewal through a carefully designed air path and control system. The system operation is divided into the pre-startup stage and the operation stage:

[0035] 1. Pre-startup phase:

[0036] Fresh air duct purification: First, connect the fresh air duct 5 with the outdoor air. After starting up, only start the fresh air compressor assembly, close the fresh air suction solenoid valve 17 and the fresh air outlet solenoid valve 18, open the recoil suction solenoid valve 21 and the recoil outlet solenoid valve 16, and the air inlet end of the fresh air compressor body 22 inhales indoor air from the recoil suction port 11 at the bottom of the oxygen generator casing 1. After passing through the air intake filter 20, the gas is pressurized and discharged to the outside through the fresh air duct 5. Under the action of high-pressure gas, this process helps to clean up impurities that may exist in the pipeline, ensuring that the pipeline is unobstructed and the subsequent gas supply is pure.

[0037] 2. Operation phase:

[0038] (1) Fresh air collection and oxygen supply: The PSA oxygen production system and the fresh air compressor assembly are started at the same time, the fresh air intake solenoid valve 17 and the fresh air outlet solenoid valve 18 are opened, the recoil intake solenoid valve 21 and the recoil outlet solenoid valve 16 are closed, and the air intake end of the fresh air compressor body 22 inhales outdoor fresh air from the fresh air pipe 5, and enters the fresh air tank 14 after being filtered by the air intake filter 20 and maintained at a slightly higher pressure than the atmospheric pressure. The air volume of the fresh air compressor assembly should be slightly larger than the air intake volume of the oxygen production air compressor body 19 to ensure continuous supply of fresh air. The PSA oxygen production system extracts fresh air from the fresh air tank 14, produces pure oxygen through a separation and adsorption process, and outputs it from the oxygen outlet 2, while non-oxygen gases such as nitrogen are discharged from the bottom.

[0039] (2) Indoor air quality control: When the device is running for a long time and the indoor environment is relatively closed, the indoor nitrogen concentration or carbon dioxide concentration will be too high. The device will switch to exhaust mode. The control logic of this mode imitates the operation logic of the pre-startup stage. It will not be described in detail here. It will exhaust the indoor nitrogen-rich or high carbon dioxide concentration air to the outside, effectively improving the indoor air quality.

[0040] The present invention can ensure that the air inhaled by the oxygen generator is always fresh outdoor air, and can also discharge indoor air to the outdoors through the exhaust mode, thereby ensuring the stability of the oxygen-making raw materials, and thus ensuring the stability of the oxygen concentration, ensuring that the user can inhale oxygen of sufficient concentration in a fresh air environment during use, thereby improving comfort. This invention is particularly suitable for the use of oxygen generators in a relatively closed environment.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dual air compressor fresh air oxygen generator, characterized in that: It comprises a casing, an air inlet is arranged at the top of the casing, a recoil air inlet and an air outlet are arranged at the bottom, an oxygen outlet and a fresh air interface are arranged at both sides of the casing, and a PSA oxygen production system and a fresh air compressor assembly are arranged inside the casing; The PSA oxygen production system includes an oxygen production air compressor body, a cooling fan, an oxygen production solenoid valve connected to the oxygen production air compressor body outlet pipe, an adsorption tower, and a flow meter. The outlet pipe is connected to the oxygen outlet. The fresh air compressor assembly includes a fresh air tank connected to the oxygen production air compressor body inlet pipe, a fresh air outlet solenoid valve connected to the fresh air tank, a pressure relief valve arranged on the fresh air tank, a recoil outlet solenoid valve and a fresh air compressor body respectively connected to the fresh air outlet solenoid valve, a fresh air pipe and a fresh air intake solenoid valve respectively connected to the recoil outlet solenoid valve, the fresh air intake solenoid valve is respectively connected to the recoil intake solenoid valve and the fresh air compressor body intake filter; the other end of the recoil intake solenoid valve is connected to the recoil intake port, and the fresh air pipe extends to the outdoors through a fresh air interface.

2. The dual air compressor type fresh air oxygen generator according to claim 1, characterized in that: The fresh air outlet solenoid valve is connected to the recoil outlet solenoid valve and the fresh air compressor body through a three-way pipe, the recoil outlet solenoid valve is connected to the fresh air intake solenoid valve and the fresh air pipe through a three-way pipe, and the fresh air intake solenoid valve is connected to the recoil intake solenoid valve and the air intake filter through a three-way pipe.

3. The dual air compressor type fresh air oxygen generator according to claim 1, characterized in that: There are two heat dissipation fans, and the wind direction is set from top to bottom.

4. The dual air compressor type fresh air oxygen generator according to claim 1, characterized in that: The fresh air duct is connected to two branches, one of which is connected to an air conditioning outlet connection joint, and the other is connected to a sliding window connection joint. The air conditioning outlet connection joint and the sliding window connection joint are respectively connected to outdoor air.

5. The dual air compressor type fresh air oxygen generator according to claim 4, characterized in that: The air conditioning outlet joint divides one route of the fresh air duct into multiple first branches, and each first branch can extend from the gap in the air conditioning outlet to the outdoors; the sliding window outlet joint divides the other route of the fresh air duct into multiple second branches, and the multiple second branches are all placed in the gap between one end of the sliding window and the wall.

6. The dual air compressor type fresh air oxygen generator according to claim 5, characterized in that: The plurality of second branch pipes are through holes respectively arranged at intervals in the connecting joint of the sliding window.

7. The dual air compressor type fresh air oxygen generator according to claim 1, characterized in that: The pressure relief pressure of the pressure relief valve on the fresh air tank is higher than the atmospheric pressure.

Images