Micro-miniature spherical power gas compression refrigeration device and its oxygen breathing apparatus system

Abstract

The present invention relates to the technical field of fire-fighting equipment, specifically a micro-miniature spherical power gas compression refrigeration device and its oxygen breathing apparatus system, including a back pack and a breathing mask. The back pack is provided with a wearing strap, and an oxygen cylinder is installed inside the back pack. A pressure reducing valve is installed on the oxygen cylinder, and a pressure gauge is connected to the pressure reducing valve through a first hose. When rescue personnel carry out high-intensity rescue operations, as carbon dioxide in the exhaled gas reacts with calcium hydroxide in the filter cartridge, the temperature inside the filter cartridge will rise rapidly. When the temperature inside the filter cartridge reaches above the boiling point of the refrigerant (the refrigerant is selected according to the actual situation of the enterprise, and the boiling point shall not exceed 35°C), the filter cartridge can be regarded as an evaporation chamber, evaporating the refrigerant into a gaseous state. Subsequently, under the action of the refrigeration mechanism, the heat inside the filter cartridge is continuously absorbed, so that during the use of this device, rescue personnel can always inhale gas at a suitable temperature.

Description

Technical Field

[0001] The present invention relates to the technical field of fire-fighting equipment, in particular to a miniature spherical power gas compressor refrigeration device and an oxygen respirator system thereof. Background Art

[0002] In existing oxygen respirator technology, refrigeration plays a crucial role, ensuring that rescuers breathe gases at the appropriate temperature while performing their missions. Traditional refrigeration methods primarily use water ice or chemical blue ice. These two refrigerants must be stored in a refrigerated or frozen environment under normal conditions to ensure effective cooling. However, in practical applications, these methods have numerous shortcomings.

[0003] First, water ice and chemical blue ice must be removed from refrigeration or freezing and installed in oxygen respirators before use. This process is not only cumbersome but also time-consuming, significantly impacting rescue efficiency. Especially in emergency situations, a delay can have immeasurable consequences.

[0004] Secondly, storing this refrigerant requires additional cold rooms, which undoubtedly increases the complexity and cost of rescue equipment. Furthermore, traditional refrigeration methods also suffer from temperature regulation issues. In the early stages of using oxygen respirators, the refrigerant temperature is too low, resulting in cold air for rescuers, which can easily cause discomfort.

[0005] To overcome the shortcomings of traditional cooling methods, industry insiders have proposed semiconductor refrigeration technology. Semiconductor refrigeration offers advantages such as simple structure, compact size, and the absence of additional storage space, which significantly improves cooling efficiency and convenience. However, in practical applications, semiconductor refrigeration technology has also exposed some drawbacks.

[0006] Because semiconductor materials have relatively low thermal conductivity, they absorb heat slowly, resulting in less-than-ideal cooling performance. This is particularly true in high-temperature environments, such as fire scenes, where semiconductor cooling can be severely limited or even inoperable. Furthermore, semiconductor cooling's temperature control is easily affected by the external environment, making the cooling effect less stable.

[0007] In summary, existing oxygen respirator refrigeration technology has many shortcomings and cannot meet the rescuers' needs for inhaled gas temperature stability and comfort. Therefore, a new type of refrigeration device is urgently needed that can overcome the shortcomings of traditional refrigeration methods, achieve precise control of gas temperature and stable output, and provide rescuers with a more comfortable and efficient breathing environment. To this end, we propose a micro-spherical power gas compressor refrigeration device and its oxygen respirator system. Summary of the Invention

[0008] To solve the above technical problems, the present invention provides a micro-miniature spherical power gas compression refrigeration device, including a back pack and a breathing mask. The back pack is provided with a wearing strap. An oxygen cylinder is installed in the back pack. A pressure reducing valve is installed on the oxygen cylinder. A pressure gauge is connected to the pressure reducing valve through a first hose. The device further includes:

[0009] An airbag chamber installed inside the back pack;

[0010] A filter box installed inside the back pack, with calcium hydroxide particles placed inside, located below the airbag chamber, and connected to the airbag chamber through a second hose;

[0011] An air supply pipe, one end of which is connected to the air inlet of the breathing mask, and the other end passes through the back pack and is connected to the airbag chamber. The air supply pipe is divided into two parts. The part close to the breathing mask is cylindrical, and the normal horizontal plane of the part far from the breathing mask is a semi-circular pipe. The arc part of the semi-circular pipe is made of plastic with good heat insulation effect, and the plane part is made of composite plastic with good heat conduction effect and is thin;

[0012] An oxygen delivery pipe connected between the air supply pipe and the pressure reducing valve, and an electric control flow valve is arranged inside;

[0013] A recovery pipe, one end of which is connected to the exhaust port of the breathing mask, and the other end passes through the back pack and is connected to the filter box. The recovery pipe has the same structure as the air supply pipe, and the plane parts of the two are fixed together. After the air supply pipe and the recovery pipe are bonded, they form a Y-shaped pipe;

[0014] A spherical compressor installed in the back pack through a bracket;

[0015] A refrigeration mechanism installed inside the back pack and connected to the spherical compressor and the filter box. The refrigeration mechanism absorbs the heat generated by the reaction of carbon dioxide in the exhaled gas of the rescuer with the carbon dioxide in the filter box and the heat of the hot air exhaled by the rescuer during heavy physical activities, and uses the absorbed heat as the source of evaporation heat to achieve cooling inside the filter box.

[0016] In some embodiments, the refrigeration mechanism includes a pipe group installed inside the filter box. The pipe group is composed of a number of pipes distributed in a horizontal array and a vertical array and connected to each other, evenly distributed inside the filter box. The pipe group is filled with a refrigerating liquid. One side of the top of the pipe group is connected to a liquid inlet pipe, and the diagonal part is connected to an exhaust pipe. A first pipe is connected between the exhaust pipe and the air inlet of the spherical compressor. A first three-way pipe is installed on the exhaust port of the spherical compressor. A second three-way pipe is mirror-connected to the first three-way pipe. An S-shaped pipe is connected to the second three-way pipe. An adaptive condenser installed in the back pack is also included.

[0017] In some embodiments, the adaptive condenser includes an electronically controlled pressure valve installed at the connection part between one of the ports of the second three-way pipe and the first three-way pipe. The electronically controlled pressure valve is built-in with a pressure sensor. It also includes an airtight box installed at the connection part between the other port of the second three-way pipe and the first three-way pipe. The airtight box is circular and communicates with the second three-way pipe. The axis of the airtight box is away from the corresponding second three-way pipe. A turbine is coaxially installed in the airtight box. A first rotating shaft is installed on the turbine. A second rotating shaft is installed on the back pack. A fan is sleeved on the second rotating shaft. A protective shell is installed in the back pack and surrounds the fan. A gear acceleration group is installed between the second rotating shaft and the first rotating shaft. The first rotating shaft is connected to the input end of the gear acceleration group. The second rotating shaft is connected to the output end of the gear acceleration group. It also includes a cooling element installed between the end of the S-shaped pipe away from the second three-way pipe and the end of the liquid inlet pipe away from the pipe group.

[0018] In some embodiments, the cooling element includes a cooling pipe that connects the end of the S-shaped pipe away from the second three-way pipe and the end of the liquid inlet pipe away from the pipe group. The cooling pipe is in the shape of an hourglass.

[0019] In some embodiments, isolation nets are installed at the connection parts between the recovery pipe and the filter box and between the second hose and the filter box.

[0020] In some embodiments, through holes are formed in the filter box on the side opposite to the lid of the back pack. The edges of the through holes are designed with anti-flow grooves. A sealing cover is installed on the through holes, and a sealing ring is installed on the sealing cover.

[0021] In some embodiments, a barometric pressure sensor is installed in the airbag compartment, and the barometric pressure sensor is electrically connected to the spherical compressor.

[0022] In some embodiments, the cooling element includes a first sealing plate installed at the end of the S-shaped pipe away from the second three-way pipe, and a second sealing plate installed at the end of the liquid inlet pipe away from the pipe group. A capillary tube is connected between the first sealing plate and the second sealing plate. There are several capillary tubes and they are evenly distributed.

[0023] An oxygen breathing apparatus system adopts the above-mentioned micro-miniature spherical power gas compression refrigeration device, and a non-contact breathing sensor is arranged in the breathing mask. The non-contact breathing sensor is electrically connected to the barometric pressure sensor and the spherical compressor.

[0024] The present invention has at least the following beneficial effects:

[0025] 1. The temperature of the exhaled gas of the rescuer is close to the human body temperature. The Y-shaped arrangement after the air supply pipe and the recovery pipe are bonded enables heat transfer to always occur between the exhaled gas and the gas to be inhaled during the rescuer's breathing process, regulating the temperature of the gas inhaled by the rescuer.

[0026] 2. When the rescuer conducts high-intensity rescue operations, as the carbon dioxide in the exhaled gas reacts with calcium hydroxide in the filter cartridge, the temperature inside the filter cartridge will rise rapidly. When the temperature inside the filter cartridge reaches above the boiling point of the refrigerant (the refrigerant is selected according to the actual situation of the enterprise, and the boiling point shall not exceed 35°C), the filter cartridge can be regarded as an evaporation chamber to evaporate the refrigerant into a gaseous state. Subsequently, under the action of the refrigeration mechanism, the heat inside the filter cartridge is continuously absorbed, enabling the rescuer to always inhale gas at an appropriate temperature during the use of this device.

[0027] 3. With the cooperation of the adaptive condenser and the spherical compressor, this device can achieve corresponding refrigeration efficiency according to the actual breathing frequency and exercise amount of the rescuer during the rescue process, making efficient use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 is a schematic diagram of the rear view structure of the present invention;

[0030] Figure 3 is a schematic diagram of the internal structure of the present invention;

[0031] Figure 4 is a schematic diagram of the exploded structure of the filter cartridge of the present invention;

[0032] Figure 5 is of the present invention Figure 4 schematic diagram of the structure at A in;

[0033] Figure 6 is a schematic diagram of the internal side view structure of the present invention;

[0034] Figure 7 is of the present invention Figure 6 schematic diagram of the structure at B in;

[0035] Figure 8 is a schematic diagram of the structure of the refrigeration mechanism of the present invention;

[0036] Figure 9 is of the present invention Figure 8 schematic diagram of the structure at C in;

[0037] Figure 10 is a schematic diagram of the structure of Embodiment 2 of the present invention.

[0038] In the figure: 1. Backpack storage; 11. Breathing mask; 111. Non-contact breathing sensor; 12. Wearing strap; 13. Oxygen cylinder; 14. Pressure reducing valve; 15. First hose; 16. Pressure gauge; 2. Airbag storage; 21. Air pressure sensor; 3. Filter box; 31. Second hose; 32. Isolation net; 4. Air supply pipe; 5. Oxygen delivery pipe; 51. Electrically controlled flow valve; 6. Recovery pipe; 7. Spherical compressor; 8. Refrigeration mechanism; 81. Pipe group; 82. Liquid inlet pipe; 83. Exhaust pipe; 84. First pipe; 85. First three-way pipe; 86. Second three-way pipe; 87. S-shaped pipe; 88. Adaptive condenser; 881. Electrically controlled pressure valve; 882. Sealed box; 883. Turbine; 884. First rotating shaft; 885. Second rotating shaft; 886. Fan; 887. Protective shell; 888. Gear acceleration group; 889. Cooling element; 8891. Cooling pipe; 8892. First sealing plate; 8893. Second sealing plate; 8894. Capillary tube; 91. Through hole; 92. Sealing cover; 93. Sealing ring. Detailed implementation mode

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment 1

[0040] Please refer to Figures 1-9 , the present invention provides a technical solution: a micro-miniature spherical power gas compression refrigeration device, including a backpack storage 1 and a breathing mask 11. The backpack storage 1 is provided with a wearing strap 12. An oxygen cylinder 13 is installed in the backpack storage 1. A pressure reducing valve 14 is installed on the oxygen cylinder 13. A pressure gauge 16 is connected to the pressure reducing valve 14 through a first hose 15. It further includes:

[0041] An airbag storage 2, and the airbag storage 2 is installed inside the backpack storage 1;

[0042] A filter box 3, the filter box 3 is installed inside the backpack storage 1, and calcium hydroxide particles are placed inside, which is located below the airbag storage 2 and is communicated with the airbag storage 2 through a second hose 31;

[0043] An air supply pipe 4, one end of the air supply pipe 4 is communicated with the air inlet of the breathing mask 11, and the other end penetrates through the backpack storage 1 and then is communicated with the airbag storage 2. The air supply pipe 4 is divided into two parts. The part close to the breathing mask 11 is cylindrical, and the normal horizontal plane of the part far from the breathing mask 11 is a semi-circular pipe. The arc part of the semi-circular pipe is made of plastic with good heat insulation effect, and the plane part is made of composite plastic with good heat conduction effect and is thin;

[0044] The arc part can be made of silicone material or PVC material. The flat part can be made by adding a metal layer such as copper or aluminum inside or outside the plastic hose, or filling the inside of the plastic hose with a heat-conducting material such as graphite, heat-conducting oil, or heat-conducting plastic particles, and then using a two-color injection molding process to achieve a better heat-conducting effect.

[0045] Oxygen delivery pipe 5 is connected between the air supply pipe 4 and the pressure reducing valve 14, and an electronically controlled flow valve 51 is provided inside.

[0046] Recovery pipe 6, one end of the recovery pipe 6 is connected to the exhaust port of the breathing mask 11, and the other end penetrates through the back pack 1 and then is connected to the filter box 3. The recovery pipe 6 has the same structure as the air supply pipe 4, and the flat parts of the two are fixed together. After the air supply pipe 4 and the recovery pipe 6 are bonded, they form a Y-shaped pipe.

[0047] The temperature of the exhaled gas of the rescuer is close to the human body temperature. The Y-shaped arrangement after the air supply pipe 4 and the recovery pipe 6 are bonded enables heat transfer to always occur between the exhaled gas and the gas to be inhaled during the breathing process of the rescuer, thereby regulating the temperature of the gas inhaled by the rescuer.

[0048] Spherical compressor 7 is installed in the back pack 1 through a bracket.

[0049] Refrigeration mechanism 8 is installed inside the back pack 1 and is connected to the spherical compressor 7 and the filter box 3. The refrigeration mechanism 8 absorbs the heat generated by the reaction of carbon dioxide in the exhaled gas of the rescuer with carbon dioxide in the filter box 3 and the heat of the hot gas exhaled by the rescuer during heavy physical activities, and uses the absorbed heat as the heat source for evaporation to achieve cooling inside the filter box 3.

[0050] The refrigeration mechanism 8 includes a pipe group 81 installed inside the filter box 3. The pipe group 81 is composed of pipes distributed in a transverse array and a longitudinal array and connected to each other, and is evenly distributed inside the filter box 3. The pipe group 81 is filled with a refrigerant. One side of the top of the pipe group 81 is connected to a liquid inlet pipe 82, and the diagonal part is connected to an exhaust pipe 83. A first pipe 84 is connected between the exhaust pipe 83 and the air inlet of the spherical compressor 7. A first three-way pipe 85 is installed at the exhaust port of the spherical compressor 7. A second three-way pipe 86 is connected to the first three-way pipe 85 in a mirror image manner. An S-shaped pipe 87 is connected to the second three-way pipe 86. It also includes an adaptive condenser 88 installed in the back pack 1.

[0051] The adaptive condenser 88 includes an electronically controlled pressure valve 881 installed at the connection part between one of the ports of the second three-way pipe 86 and the first three-way pipe 85. The electronically controlled pressure valve 881 is built-in with a pressure sensor. It also includes an airtight box 882 installed at the connection part between the other port of the second three-way pipe 86 and the first three-way pipe 85. The airtight box 882 is circular and communicates with the second three-way pipe 86. The axis of the airtight box 882 is away from the corresponding second three-way pipe 86. A turbine 883 is coaxially installed in the airtight box 882. A first rotating shaft 884 is installed on the turbine 883. A second rotating shaft 885 is installed on the back pack 1. A fan 886 is sleeved on the second rotating shaft 885. A protective shell 887 is installed in the back pack 1, and the protective shell 887 surrounds the fan 886. A gear acceleration group 888 is installed between the second rotating shaft 885 and the first rotating shaft 884. The first rotating shaft 884 is connected to the input end of the gear acceleration group 888, and the second rotating shaft 885 is connected to the output end of the gear acceleration group 888. It also includes a cooling element 889 installed between the end of the S-shaped pipe 87 far from the second three-way pipe 86 and the end of the liquid inlet pipe 82 far from the pipe group 81.

[0052] The cooling element 889 includes a cooling pipe 8891 that connects the end of the S-shaped pipe 87 far from the second three-way pipe 86 and the end of the liquid inlet pipe 82 far from the pipe group 81. The cooling pipe 8891 is in the shape of an hourglass.

[0053] Compared with the capillary tube 8894, the hourglass-shaped cooling pipe 8891 has a lower cost, is stronger, has a low damage rate, and is more practical for the disaster site.

[0054] Isolation nets 32 are installed at the connection parts between the recovery pipe 6 and the filter box 3 and between the second hose 31 and the filter box 3.

[0055] The isolation net 32 can prevent calcium hydroxide particles from entering the recovery pipe 6 and the second hose 31.

[0056] Through holes 91 are opened on the filter box 3. The through holes 91 are located on the side opposite to the lid of the back pack 1. The edges of the through holes 91 are designed with anti-flow grooves. Sealing covers 92 are installed on the through holes 91, and sealing rings 93 are installed on the sealing covers 92.

[0057] Rescue personnel can load or replace the calcium hydroxide particles in the filter box 3 by removing or installing the sealing cover 92.

[0058] A pressure sensor 21 is installed in the airbag compartment 2, and the pressure sensor 21 is electrically connected to the spherical compressor 7.

[0059] An oxygen breathing apparatus system uses the above-mentioned micro-miniature spherical power gas compression refrigeration device, and a non-contact breathing sensor 111 is arranged in the breathing mask 11. The non-contact breathing sensor 111 is electrically connected to the pressure sensor 21 and the spherical compressor 7.

[0060] Working principle: Before entering the disaster site, the rescuer wears the backpack 1 on his back using the wearing belt 12, opens the pressure reducing valve 14 and the electronically controlled flow valve 51, and the exhaled gas of the rescuer enters the filter box 3 through the recovery pipe 6. The carbon dioxide in this part of the gas reacts with the calcium hydroxide in the filter box 3, so that the carbon dioxide in the rescuer's exhaled gas is retained in the filter box 3, and the rest enters the airbag compartment 2 through the second hose 31. When the rescuer inhales, the oxygen cylinder 13 replenishes oxygen to the air supply pipe 4 through the pressure reducing valve 14, the electronically controlled flow valve 51, and the oxygen supply pipe 5, thereby realizing the recycling of gas.

[0061] When the rescuer's exercise volume increases, the non-contact breathing sensor 111 detects that the rescuer's breathing rate accelerates. At the same time, the pressure in the airbag compartment 2 will continue to increase in a short period of time, which is detected by the air pressure sensor 21. That is, a large amount of carbon dioxide reacts with calcium hydroxide, and the power of the spherical compressor 7 is increased accordingly to ensure the refrigeration effect. The specific principle is: an exothermic reaction occurs during the reaction of carbon dioxide and calcium hydroxide, which increases the temperature in the filter box 3. When the temperature in the filter box 3 reaches the boiling point of the refrigerant, the refrigerant in the pipeline group 81 evaporates into a gaseous state. It should be noted that the boiling point of the refrigerant can be changed according to different material selections. Enterprises can set it according to their own conditions. However, the boiling point of the refrigerant cannot be higher than 35°C to ensure that the temperature of the gas inhaled by the rescuer is not too high. Under the action of the spherical compressor 7, the high-temperature gaseous refrigerant is compressed into a high-temperature and high-pressure gas and enters the first three-way pipe 85.

[0062] There are two openings connecting the first three-way pipe 85 and the second three-way pipe 86. The opening where the electric-controlled pressure valve 881 is located initially completely seals the corresponding opening. The high-temperature and high-pressure gas passes through the opening on the other side and drives the turbine 883 to rotate. The turbine 883 drives the fan 886 to rotate at high speed through the first rotating shaft 884, the gear acceleration group 888, and the second rotating shaft 885. After passing through the turbine 883 and entering the S-shaped pipe 87, the high-temperature and high-pressure gas is cooled by the fan 886 and converted into a high-temperature and high-pressure liquid. When the fan 886 reaches a certain speed, the force driving it to maintain the certain speed decreases due to inertia. At this time, the electric-controlled pressure valve 881 opens partially, diverting the high-temperature and high-pressure gaseous refrigerant in the first three-way pipe 85.

[0063] When the power of the spherical compressor 7 is constant, when the high-temperature and high-pressure gas completely passes through the turbine 883, the fan 886 rotates at the highest speed. Since part of the power is lost in driving the turbine 883 to rotate, the flow rate slows down. If the electronically controlled pressure valve 881 is fully opened, the power driving the turbine 883 to rotate is the smallest, that is, the fan 886 rotates at the slowest speed, and the refrigerant flow rate in the S-shaped pipe 87 is the fastest. That is to say, the rotation speed of the fan 886 is inversely proportional to the refrigerant flow rate in the S-shaped pipe 87. When the high-temperature and high-pressure gas passes through the hourglass-shaped cooling pipe 8891, the refrigerant flowing in the large space flows out through the narrow area, and the pressure drops as it flows. When the pressure drops, the temperature also drops sharply, becoming a low-temperature and low-pressure liquid, and then enters the filter box 3 and is evaporated again to complete the refrigeration cycle. Refrigerants with different flow rates can achieve different cooling effects. Those skilled in the art can, based on this point, combine the non-contact breathing sensor 111 and the pressure sensor to monitor the corresponding activity intensity of the rescue personnel, change the state of the electronically controlled pressure valve 881, and cooperate with the operating power of the spherical compressor 7 to accurately respond to the temperature change in the filter box 3 in real time.

[0064] In this device, the principle of changing the cooling effect by controlling the flow rate is as follows: When the rescuer is carrying out rescue work in the early stage and the temperature in the filter box 3 is temporarily within the comfortable range, the spherical compressor 7 does not start temporarily. As the rescue time extends, by gradually opening the electronically controlled pressure valve 881, the flow rate of the refrigerant gradually increases, thereby accelerating the speed of the refrigerant cycle and taking away more heat in the filter box 3. Embodiment 2

[0065] Please refer to Figure 10 , on the basis of Embodiment 1 of the present invention, another solution for the cooling member 889 is proposed:

[0066] The cooling member 889 includes a first sealing plate 8892 installed at one end of the S-shaped pipe 87 away from the second three-way pipe 86, and a second sealing plate 8893 installed at one end of the liquid inlet pipe 82 away from the pipe group 81. A capillary tube 8894 is connected between the first sealing plate 8892 and the second sealing plate 8893. There are several capillary tubes 8894 and they are evenly distributed.

[0067] Compared with the hourglass-shaped cooling pipe 8891, the capillary tube 8894 can achieve a stronger cooling effect.

[0068] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0069] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Miniature spherical power gas compression refrigeration device, including a back pack (1) and a breathing mask (11), the back pack (1) is provided with a wearing belt (12), an oxygen cylinder (13) is installed in the back pack (1), a pressure reducing valve (14) is installed on the oxygen cylinder (13), a pressure gauge (16) is connected to the pressure reducing valve (14) through a first hose (15), and it is characterized in that: Further included are: An airbag bin (2), which is installed inside the back bin (1); A filter box (3), which is installed inside the back bin (1), contains calcium hydroxide particles inside, is located below the airbag bin (2), and is connected to the airbag bin (2) by a second hose (31); An air supply pipe (4), one end of which is connected to the air inlet of the breathing mask (11), and the other end passes through the back bin (1) and then is connected to the airbag bin (2). The air supply pipe (4) is divided into two parts. The part close to the breathing mask (11) is cylindrical, and the normal horizontal plane of the part far from the breathing mask (11) is a semi-circular pipe. The arc part of the semi-circular pipe is made of a plastic material with good heat insulation effect, and the flat part is made of a composite plastic material with good heat conduction effect and is thin; An oxygen delivery pipe (5), which is connected between the air supply pipe (4) and the pressure reducing valve (14), and is provided with an electronically controlled flow valve (51) inside; A recovery pipe (6), one end of which is connected to the exhaust port of the breathing mask (11), and the other end passes through the back bin (1) and then is connected to the filter box (3). The recovery pipe (6) has the same structure as the air supply pipe (4), and the flat parts of the two are fixed together. After the air supply pipe (4) and the recovery pipe (6) are bonded, they form a Y-shaped pipe; A spherical compressor (7), which is installed in the back bin (1) through a bracket; A refrigeration mechanism (8), which is installed inside the back bin (1), and is connected to the spherical compressor (7) and the filter box (3). The refrigeration mechanism (8) absorbs the heat generated by the reaction of carbon dioxide in the exhaled gas of the rescuer with calcium hydroxide in the filter box (3), and the heat of the hot air exhaled by the rescuer during heavy physical activities, and uses the absorbed heat as the heat source for evaporation heat, so as to realize the cooling of the inside of the filter box (3); A first three-way pipe (85) is installed on the exhaust port of the spherical compressor (7), a second three-way pipe (86) is mirror-connected to the first three-way pipe (85), an S-shaped pipe (87) is connected to the second three-way pipe (86), and the refrigeration mechanism (8) includes an adaptive condenser (88) installed in the back bin (1); The adaptive condensing element (88) includes an electrically controlled pressure valve (881) installed at the connection portion between one of the ports of the second three-way pipe (86) and the first three-way pipe (85), the electrically controlled pressure valve (881) having a built-in pressure sensor, and also includes a sealed box (882) installed at the connection portion between the other port of the second three-way pipe (86) and the first three-way pipe (85), the sealed box (882) being circular and in communication with the second three-way pipe (86), the axis of the sealed box (882) being away from the corresponding second three-way pipe (86), the sealed box (882) The closing box (882) is coaxially mounted with a turbine (883), the turbine (883) is mounted with a first rotating shaft (884), the backpack (1) is mounted with a second rotating shaft (885), the second rotating shaft (885) is sleeved with a fan (886), a gear acceleration group (888) is mounted between the second rotating shaft (885) and the first rotating shaft (884), the first rotating shaft (884) is connected to the input end of the gear acceleration group (888), and the second rotating shaft (885) is connected to the output end of the gear acceleration group (888).

2. The micro spherical power gas compression refrigeration device according to claim 1, characterized in that: The refrigeration mechanism (8) further comprises a pipe group (81) installed inside the filter box (3), wherein the pipe group (81) is composed of a plurality of pipes distributed in a transverse array and a longitudinal array and connected to each other and evenly distributed inside the filter box (3), and the pipe group (81) is filled with refrigerant. A liquid inlet pipe (82) is connected to one side of the top of the pipe group (81), and an exhaust pipe (83) is connected to the diagonally opposite part. A first pipe (84) is connected between the exhaust pipe (83) and the air inlet of the spherical compressor (7).

3. The micro-miniature spherical power gas compression refrigeration device according to claim 2, characterized in that: A protective shell (887) is installed in the backpack (1), and the protective shell (887) surrounds the fan (886). The adaptive condensing element (88) further includes a cooling element (889) installed between an end of the S-shaped tube (87) away from the second three-way tube (86) and an end of the liquid inlet tube (82) away from the pipe group (81).

4. The micro-miniature spherical power gas compression refrigeration device according to claim 3, characterized in that: The cooling element (889) comprises a cooling tube (8891) connecting one end of the S-shaped tube (87) away from the second three-way tube (86) with one end of the liquid inlet tube (82) away from the pipeline group (81); the cooling tube (8891) is hourglass-shaped.

5. The micro-miniature spherical power gas compression refrigeration device according to claim 1, characterized in that: The connection portion between the recovery pipe (6) and the filter box (3), and the connection portion between the second hose (31) and the filter box (3) are both installed with an isolation net (32).

6. The micro-miniature spherical power gas compression refrigeration device according to claim 1, characterized in that: The filter box (3) is provided with a through hole (91), which is located on a side opposite to the cover of the backpack (1). The edge of the through hole (91) is designed as an anti-flow groove. A sealing cover (92) is installed on the through hole (91), and a sealing ring (93) is installed on the sealing cover (92).

7. The micro-miniature spherical power gas compression refrigeration device according to claim 1, characterized in that: An air pressure sensor (21) is installed in the air bag compartment (2), and the air pressure sensor (21) is electrically connected to the spherical compressor (7).

8. The micro-miniature spherical power gas compression refrigeration device according to claim 3, characterized in that: The cooling member (889) includes a first sealing plate (8892) installed at one end of the S-shaped pipe (87) away from the second three-way pipe (86), and a second sealing plate (8893) installed at one end of the liquid inlet pipe (82) away from the pipe group (81). A capillary tube (8894) is connected between the first sealing plate (8892) and the second sealing plate (8893). There are several capillary tubes (8894) and they are evenly distributed.

9. An oxygen breathing apparatus system, which adopts the micro-miniature spherical power gas compression refrigeration device described in any one of claims 1-8, is characterized in that: It includes a non-contact breathing sensor (111) arranged in the breathing mask (11), and the non-contact breathing sensor (111) is electrically connected to the air pressure sensor (21) and the spherical compressor (7).

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