Gas cylinder connecting module and breathing gas supply equipment with same

Abstract

The utility model relates to the field of ventilation treatment equipment, and discloses a gas cylinder connecting module and breathing gas supply equipment comprising the same, the gas cylinder connecting module comprises a gas cylinder connecting port (101), an inflation channel (L11) and a gas supply channel (L12), the inflation channel (L11) is provided with an inflation one-way valve (103) only allowing gas flow to flow towards the gas cylinder connecting port (101), and the gas supply channel (L12) is provided with a gas supply one-way valve (103) only allowing gas flow to flow towards the gas cylinder connecting port (101). The gas supply channel (L12) is provided with a gas supply control valve (140) used for controlling the gas supply pressure and / or flow of a gas cylinder connected to the gas cylinder connector (101). The gas cylinder connecting module is suitable for inflating the gas cylinder connected to the gas cylinder connecting port through the inflating channel of the gas cylinder connecting module, so that the suitability of a connecting joint between the inflating equipment and the gas cylinder does not need to be considered, and a user can obtain gas stored in the gas cylinder through the gas supply channel; combinations of the gas cylinder connecting module and gas cylinders of different specifications or numbers can be flexibly matched according to needs, and the gas cylinder connecting module has the advantages of being good in universality, convenient to use and the like.

Description

Technical Field

[0001] The utility model relates to ventilation therapy equipment, in particular to a gas cylinder connection module. On this basis, the utility model also relates to a breathing gas supply device comprising the gas cylinder connection module. Background Art

[0002] With the development of society and the improvement of people's living standards, people are paying more and more attention to their health. Oxygen is an important component necessary for human life activities and metabolism. Oxygen inhalation can increase the partial pressure of oxygen in human arterial blood and the level of oxygen saturation. Moderate oxygen therapy helps sleep, promotes body metabolism, and relieves pain. At the same time, oxygen therapy is also one of the important methods for auxiliary treatment of various diseases. For example, patients with chronic cardiopulmonary diseases need long-term oxygen inhalation auxiliary treatment to delay the deterioration of the disease and relieve the symptoms of chest tightness, wheezing, and dyspnea.

[0003] Therefore, it is of great significance to allow people to obtain clean oxygen conveniently, safely, quickly and effectively. Moreover, whether at home, at the station, in the hotel, while traveling, or while climbing, oxygen and oxygen therapy can be obtained anytime, anywhere, and can effectively improve the convenience of life.

[0004] At present, the products that can provide such convenient conditions mainly include portable oxygen concentrators and disposable oxygen cylinders. However, these two products still have some shortcomings: the oxygen production performance of portable oxygen concentrators will be affected by factors such as ambient temperature and air pressure, so it is difficult to meet the medical oxygen concentration requirements of 93±3% in high-altitude or low-temperature environments; and disposable oxygen cylinders have small storage capacity and low pressure, and the oxygen that can be released is short-lived. When traveling, you need to carry a lot of bottles and cans, which is inconvenient to carry and has a poor user experience. To this end, the prior art proposes a solution of connecting multiple gas cylinders to a common gas circuit using an extension tube or a quick-connect connector. The integrated unit formed after the connection merges the gas into the main airway in the common gas circuit and then supplies it to the user. However, this solution requires the use of an inflator to inflate each gas cylinder separately, so it requires an adaptable connection connector between the inflator and the gas cylinder, and has poor versatility and ease of use. Utility Model Content

[0005] The purpose of the utility model is to overcome the problem in the prior art that a public gas circuit connected to multiple gas cylinders has poor versatility and usability due to the need to inflate each gas cylinder separately, and to provide a gas cylinder connection module that can be used to inflate the gas cylinders connected thereto and supply the gas stored in the gas cylinders to users, thereby effectively improving versatility and usability.

[0006] To achieve the above object, on the one hand, the present utility model provides a gas cylinder connection module, which includes a gas cylinder connection port, an inflation channel, and a gas supply channel. An inflation check valve that only allows air flow to the gas cylinder connection port is provided on the inflation channel, and a gas supply control valve for controlling the gas supply pressure and / or flow rate of the gas cylinder connected to the gas cylinder connection port is provided on the gas supply channel.

[0007] Preferably, the gas cylinder connection module includes a module main body provided with the gas cylinder connection port, an inflation joint, and a gas supply joint connected to the module main body.

[0008] Preferably, the inflation joint includes a quick-connect joint main body for connecting to an inflation device, and the inflation check valve is integrally arranged in the quick-connect joint main body.

[0009] Preferably, the gas supply joint is integrally arranged on the gas supply control valve, and / or the gas supply control valve is integrally provided with a pressure relief valve and / or a pressure indicating unit for indicating the air pressure in the gas supply channel.

[0010] Preferably, the gas supply control valve includes:

[0011] A housing, the housing is connected to the module main body and includes a piston chamber defined inside, an air inlet, and an air outlet communicating with the piston chamber; and

[0012] A piston assembly, the piston assembly is rotatably installed in the piston chamber and has a large air hole and a small air hole communicating with the air inlet,

[0013] Wherein, the piston assembly is arranged to be able to switch between a sealed state, a gas supply state, and a pressure relief state by rotating relative to the piston chamber, wherein: in the sealed state, both the large air hole and the small air hole are misaligned with the air outlet; in the gas supply state, the small air hole corresponds to and communicates with the air outlet; in the pressure relief state, the large air hole corresponds to and communicates with the air outlet.

[0014] Preferably, a plurality of the gas cylinder connection ports are provided on the module main body.

[0015] Preferably, the gas cylinder connection module includes a module main body provided with the gas cylinder connection port and an inflation and gas supply common joint connected to the module main body.

[0016] Further preferably, the module main body includes a module base and a switching unit adjustably installed on the module base. The gas cylinder connection port and the inflation and gas supply common joint are provided on the module base, and the inflation channel and the gas supply channel are formed in the switching unit. The switching unit can be selectively switched so that the gas cylinder connection port and the inflation and gas supply common joint communicate with each other through the inflation channel or the gas supply channel.

[0017] Preferably, the switching unit is rotatably mounted to the module base so that when it rotates to different orientations relative to the module base, the gas cylinder connection port and the inflation and supply common joint communicate with each other through the inflation channel or the supply channel.

[0018] Preferably, the gas cylinder connection module includes a module body provided with a plurality of the gas cylinder connection ports, a module base connected to the module body, and a switching unit adjustably mounted on the module base. The module base is provided with an inflation and supply common joint. The inflation channel and the supply channel are formed in the switching unit, and the switching unit can be selectively switched so that the gas cylinder connection port and the inflation and supply common joint communicate with each other through the inflation channel or the supply channel.

[0019] A second aspect of the present invention provides a breathing gas supply device, including the above gas cylinder connection module and a gas cylinder connected to the gas cylinder connection port.

[0020] Preferably, a plurality of the gas cylinders can be provided, and the volume of a single gas cylinder is less than or equal to 1 L.

[0021] Through the above technical solutions, the gas cylinder connection module of the present invention is suitable for inflating the gas cylinder connected to the gas cylinder connection port through its inflation channel, so that there is no need to consider the adaptability of the connection joint between the inflation device and the gas cylinder, and the user can obtain the gas stored in the gas cylinder through the supply channel, which is convenient for flexibly matching the gas cylinder connection module with different specifications or quantities of gas cylinders as needed, and has the advantages of good versatility and convenient use. Description of the Drawings

[0022] Figure 1 is a schematic diagram of a gas supply device according to a preferred embodiment of the present invention;

[0023] Figure 2 is a schematic diagram of a gas supply device according to another preferred embodiment of the present invention;

[0024] Figure 3 is a schematic diagram of the principle of a gas cylinder connection module according to a preferred embodiment of the present invention;

[0025] Figure 4 is a schematic structural diagram of a gas cylinder connection module according to a preferred embodiment of the present invention;

[0026] Figure 5 is a cross-sectional structural diagram of a gas supply device according to another preferred embodiment of the present invention;

[0027] Figure 6 represents Figure 4 or Figure 5Schematic cross-sectional structure diagram of the inflation check valve of the inflation joint in [name] opening against the common airway check valve;

[0028] Figure 7 It can be used for Figure 4 The gas cylinder connection module in [name] or Figure 5 Schematic cross-sectional structure diagram of the gas supply control valve of the gas supply device in [name];

[0029] Figure 8 It is the schematic cross-sectional structure diagram after removing components such as the piston assembly of the gas supply control valve in Figure 7 [[name]];

[0030] Figure 9 It is the schematic diagram of the principle of the gas cylinder connection module of another preferred embodiment of the present invention;

[0031] Figure 10 It is the three-dimensional view of the module seat and the switching unit of the gas cylinder connection module;

[0032] Figure 11 It is Figure 10 The cross-sectional view of the module seat and the switching unit in [name], wherein the switching unit is switched so that the inflation and gas supply common joint is communicated with the inflation channel;

[0033] Figure 12 It is Figure 10 The cross-sectional view of the module seat and the switching unit in [name], wherein the switching unit is switched so that the inflation and gas supply common joint is communicated with the gas supply channel;

[0034] Figure 13 It is the cross-sectional view of the gas supply device according to another preferred embodiment of the present invention;

[0035] Figure 14 It is Figure 13 The enlarged view of the partial A in [name];

[0036] Figure 15 It is the cross-sectional view of the gas supply device according to another preferred embodiment of the present invention;

[0037] Figure 16 It is the cross-sectional view of the gas supply device according to another preferred embodiment of the present invention;

[0038] Figure 17 It is the schematic diagram of the principle of the gas supply device according to another preferred embodiment of the present invention;

[0039] Figure 18 It is the schematic diagram of the principle of the gas supply device according to another preferred embodiment of the present invention.

[0040] Explanation of reference numerals

[0041] 100 - Gas cylinder connection module; 101 - Gas cylinder connection port; 102 - Inflation interface; 103 - Inflation check valve; 104 - Pressure indicating unit; 105 - Pressure relief valve; 106 - Safety valve; 107 - Supply air flow regulating valve; 108 - Main supply air switch; 109 - Supply air interface;

[0042] 110 - Module main body; 111 - Thumb rod; 112 - Gasket; 113 - Branch flow regulating valve; 114 - Branch air path check valve; 115 - Common air path check valve; 120 - Inflation joint; 130 - Supply air joint; 140 - Supply air control valve; 141 - Outer shell; 141a - Piston chamber; 141b - Air inlet; 141c - Air outlet; 142 - Piston assembly; 142a - Large air hole; 142b - Small air hole; 143 - Mounting seat; 150 - Module seat; 151 - Module main body connection port; 152 - Inflation and supply air common joint; 160 - Switching unit;

[0043] L1 - Common air path; L11 - Inflation channel; L12 - Supply air channel; L2 - Branch air path; LS - On - off switch; LP - Output interface;

[0044] 200 - Gas cylinder; 201 - Throttle hole; 202 - Gas cylinder check valve. Specific embodiments

[0045] The following will describe in detail the specific embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustration and explanation of the present utility model, and are not used to limit the present utility model.

[0046] Refer to Figure 3 and Figure 4 As shown in [drawings not specified], the gas cylinder connection module according to the first preferred embodiment of the present utility model includes a gas cylinder connection port 101, an inflation channel L11, and a supply air channel L12. Among them, an inflation check valve 103 that only allows air flow to the gas cylinder connection port 101 is provided on the inflation channel L11, and a supply air control valve 140 for controlling the supply air pressure and / or flow rate of the gas cylinder connected to the gas cylinder connection port 101 is provided on the supply air channel L12.

[0047] Thus, a gas cylinder can be connected to the gas cylinder connection port 101 of the gas cylinder connection module, and the gas cylinder can be inflated by using an inflation device connected to the inflation channel L11. The gas cylinder can be detachably connected to the gas cylinder connection port 101 in the form of threads or the like, or the gas cylinder can be integrally formed with the gas cylinder connection port 101 directly. Since the inflation check valve 103 is provided on the inflation channel L11, the inflation check valve 103 only allows the air flow to flow from the inflation interface L11 to the gas cylinder connection port 101. Thus, the gas output by the inflation device can be filled into the gas cylinder through the inflation channel L11. When no inflation operation is performed, the check valve 103 can prevent the gas in the gas cylinder from leaking through the inflation channel L11. Since the gas cylinder is connected to the gas cylinder connection module for inflation, there is no need to consider the adaptability of the connection joint between the inflation device and the gas cylinder. As long as the inflation device can be adapted to the inflation joint of the inflation channel L11, different specifications or quantities of gas cylinders connected to the gas cylinder connection module can be inflated.

[0048] It should be noted that the gas cylinders involved in this solution are mainly containers for storing gas, so it is not limited to gas cylinders only. For example, it can be multiple independently provided cavities opened in the gas cylinder connection module, as long as it can meet the gas storage function, there is no need to make too many limitations here. And since each gas cylinder is set separately, when there is no gas in a certain gas cylinder or the gas supply has problems, other independently provided gas cylinders can all realize supplementary gas supply, so that it can meet more usage scenarios of users and the usage requirements of large-capacity gas supply, and has high safety.

[0049] Preferably, the volume (volume) of a single gas cylinder or cavity is set to not exceed 1L, and three to four of them can be continuously provided. In this way, not only can the portable carrying requirement be realized, but also the large-capacity gas storage can be realized. When a single gas cylinder fails, it will not affect the use of other containers of the equipment, and it has high safety.

[0050] Moreover, in the state where the gas cylinder is connected to the gas cylinder connection module, the user can obtain the gas stored in the gas cylinder through its gas supply channel L12, so as to facilitate the flexible combination of the gas cylinder connection module and different specifications or quantities of gas cylinders according to needs, and has the advantages of good versatility and convenient use. By setting a gas supply control valve 140 on the gas supply channel L12, the high-pressure gas in the gas cylinder can be reduced to an appropriate pressure and provided to the user through the gas supply interface 109 with a safe, stable and gentle flow rate.

[0051] Refer to Figures 9 to 12As shown, the cylinder connection module according to the second preferred embodiment of the present utility model includes a module base 150 and a switching unit 160 adjustably mounted on the module base 150 (the module base 150 and the switching unit 160 as a whole can be regarded as the module main body). Among them, a cylinder connection port 101 and an inflation and gas supply common joint 152 are provided on the module base 150. An inflation channel L11 and a gas supply channel L12 are formed in the switching unit 160, and the switching unit 160 can be selectively switched so that the cylinder connection port 101 and the inflation and gas supply common joint 152 are communicated with each other through the inflation channel L11 or the gas supply channel L12.

[0052] Thus, the cylinder can be connected to the module base 150 through the cylinder connection port 101, and the position of the switching unit 160 relative to the module base 150 can be adjusted so that the cylinder connection port 101 (i.e., the cylinder) and the inflation and gas supply common joint 152 are communicated with each other through the inflation channel L11 or the gas supply channel L12. In this preferred embodiment, an inflation one-way valve 103 and a gas supply control valve 140 are both provided on the switching unit 160 and are provided corresponding to the inflation channel L11 and the gas supply channel L12. When it is necessary to inflate the cylinder, as Figure 11 shown, the switching unit 160 is adjusted so that the cylinder connection port 101 and the inflation and gas supply common joint 152 are communicated through the inflation channel L11. Thus, the inflation device can be connected to the inflation and gas supply common joint 152 to inflate the cylinder through the inflation channel L11; when it is necessary to supply gas to the user, as Figure 12 shown, the switching unit 160 is adjusted so that the cylinder connection port 101 and the inflation and gas supply common joint 152 are communicated through the gas supply channel L12. Thus, the gas in the cylinder connected to the cylinder connection port 101 can be supplied to the inflation and gas supply common joint 152 through the gas supply channel L12, and then supply breathing gas to the user.

[0053] The switching unit 160 can be arranged to be adjusted between different connection states in various ways. For example, the switching unit 160 can be rotatably mounted on the module base 150 so that the cylinder connection port 101 and the inflation and gas supply common joint 152 are communicated with each other through the inflation channel L11 or the gas supply channel L12 when rotating to different orientations relative to the module base 150.

[0054] In the illustrated preferred embodiment, the module base 150 is shown to be provided with only one cylinder connection port 101. Thus, the user can inflate the cylinder connected to the cylinder connection port 101 or obtain breathing gas from the cylinder. In other embodiments, the module base 150 can also be provided with multiple cylinder connection ports 101 and can perform inflation and gas supply operations in the same manner as the first preferred embodiment above. For this purpose, air channels and control valves corresponding to different cylinder connection ports can be correspondingly provided in the module base 150.

[0055] Reference Figure 1 As shown, in a preferred embodiment of the gas supply device of the present utility model, the gas supply device includes a plurality of gas cylinder connection ports 101, a common air duct L1 for transporting gas, and branch air ducts L2 respectively corresponding to and connecting between each gas cylinder connection port 101 and the common air duct L1. Among them, the gas cylinder connection port 101 is used to connect a gas cylinder 200 storing gas, and can inflate the gas cylinder 200 connected to the gas cylinder connection port 101 through the common air duct L1, or supply the gas stored in the gas cylinder 200 connected to the gas cylinder connection port 101 to the outside through the common air duct L1.

[0056] For example, the gas supply device may further include an inflation passage L11 having an inflation interface 102 and a gas supply passage L12 having a gas supply interface 109. An inflation check valve 103 that only allows air to flow towards the gas cylinder connection port 101 is provided on the inflation passage L11 to be able to inflate the gas cylinder 200 connected to the gas cylinder connection port 101 through the inflation passage L11; a gas supply control valve 140 for controlling the gas supply pressure and / or flow rate is provided on the gas supply passage L12 (combined with Figure 4 shown) to allow the gas cylinder 200 connected to the gas cylinder connection port 101 to supply gas to the outside through the gas supply passage L12.

[0057] Thus, the gas supply device can be connected with a plurality of gas cylinders 200 (only one gas cylinder is schematically shown in the figure) through the gas cylinder connection port 101, and is suitable for inflating the gas cylinder 200 connected to the gas cylinder connection port 101 through its inflation passage L11. Thus, there is no need to consider the adaptability of the connection joint between the inflation device and the gas cylinder, and the user can obtain the gas stored in the gas cylinder 200 through the gas supply passage L12, which is convenient for flexibly matching different specifications or quantities of gas cylinder combinations according to needs, and has the advantages of good versatility and convenient use.

[0058] It should be noted that the gas cylinders 200 may be a plurality of independent gas cylinders, or a plurality of independently provided cavities opened, as long as they can meet the gas storage function, there is no need to make too many limitations here. And because each gas cylinder or cavity is separately provided, when there is no gas or a gas supply problem in a certain gas cylinder 200, the other independently provided gas cylinders 200 can all realize supplementary gas supply, so that it can meet the user's more usage scenarios and the usage requirements of large-capacity gas supply, and has high safety.

[0059] Preferably, the volume (volume) of a single gas cylinder or cavity is set to not exceed 1L, and three to four of them can be continuously provided. In this way, not only can the portable carrying requirement be realized, but also the large-capacity gas storage can be realized. When a single gas cylinder 200 fails, it will not affect the use of other gas cylinders of the device, and the safety is high.

[0060] The gas supply device of the present utility model may be provided with an inflation interface 102 and a gas supply interface 109 for connecting an inflation device for inflating a gas cylinder 200 and a breathing tube for supplying breathing gas to a user, etc. The inflation interface 102 and the gas supply interface 109 described herein may be independent interfaces respectively, or the two may be integrally provided as a common interface capable of selectively connecting the inflation device and the breathing tube, etc., which will be described in detail subsequently.

[0061] In Figure 1 In the preferred embodiment shown, the gas cylinder 200 is detachably connected to the gas cylinder connection port 101. Thus, although the gas cylinder 200 can be inflated by an inflation device connected to the inflation interface 102 as described above, it does not exclude the operation mode of directly inflating the gas cylinder 200 with the inflation device after the gas cylinder 200 is removed from the gas cylinder connection port 101. For this purpose, an air flow control unit for controlling the air flow rate, pressure, and flow direction (such as the throttle hole 201, the gas cylinder one-way valve 202, etc. described in detail subsequently) may be provided at the gas cylinder port of the gas cylinder 200, and a branch air path one-way valve 114 for preventing the gas in other gas cylinders from leaking from the branch air path L2 may also be provided on the branch air duct L2. In the state where the gas cylinder 202 is connected to the gas cylinder connection port 101, the branch air path one-way valve 114 and the gas cylinder one-way valve 202 may interact with each other and open simultaneously to realize the inflation and gas supply operations.

[0062] Furthermore, in Figure 1 the manner shown, the inflation channel L11 and the gas supply channel L12 are arranged at both ends of the common air path L1. Control valves and indicating units such as a pressure relief valve 105, a pressure indicating unit 104 for indicating the air pressure magnitude in the gas supply channel L12, a safety valve 106 for limiting the maximum inflation pressure, and a main gas supply switch 108 for switching the on-off state of the gas supply channel L12 may also be provided on the gas supply channel L12. For example, when the user carries the gas supply device on a public transportation vehicle such as an airplane, it may be prohibited to carry a pressurized gas cylinder. Thus, the gas in the gas cylinder can be quickly discharged through the pressure relief valve 105. The pressure indicating unit 104 can monitor the gas cylinder pressure by indicating the air pressure magnitude in the gas supply channel L12, so that the user can plan the travel itinerary according to the remaining gas volume or perform the inflation operation in a timely manner. The safety valve 106 can be used to limit the maximum inflation pressure, that is, to limit the safety threshold of the inflation pressure, to avoid overpressure and over-inflation, and plays an important role in protecting personal safety and the operation of the inflation device. In addition, a gas supply flow regulating valve 107 may also be provided on the gas supply channel L12 for regulating the gas supply flow rate.

[0063] Among them, the above control valve and indicating unit can be integrally arranged. For example, the gas supply flow regulating valve 107 and the main gas supply switch 108 can be set as a rotary switch capable of switching between the closed state and the maximum gas supply flow state in steps, so as to reduce the component arrangement. In addition, at least part of the above control valve and indicating unit can be integrally arranged on the gas supply control valve 140. In Figure 1 the gas supply device may include a cylinder connection module 100 formed with a cylinder connection port 101, a common air passage L1, and a branch air passage L2, and integrally provided with a control valve, an indicating unit, etc. The preferred embodiment thereof will be described in detail subsequently.

[0064] Figure 2 The gas supply device showing another preferred embodiment of the present invention, in combination with the above Figure 1 compared with the described embodiment, the cylinder mouth of the cylinder 200 and the cylinder connection port of the gas supply device are formed as one body. Thus, the cylinder check valve, the branch air passage check valve, etc. can be correspondingly omitted, saving production costs and reducing the structural complexity. Other aspects of this preferred embodiment are the same as those of the above Figure 1 described embodiment and will not be elaborated here.

[0065] As Figure 17 、 Figure 18 shown, the gas supply device showing another preferred embodiment of the present invention, in combination with the above Figure 1 compared with the described embodiment, the inflation passage L11 and the gas supply passage L12 are arranged on one side of the common air passage L1. The common air passage L1 includes at least one of a pressure relief valve 105, a pressure indicating unit 104 for indicating the magnitude of the air pressure, and a safety valve 106 for limiting the maximum inflation pressure. The output end of the common air passage L1 is connected to an inflation control valve or a gas supply control valve 140. When connected to the inflation control valve, the outside gas is inflated into the container 200 through the common air passage L1; when connected to the gas supply control valve 140, the gas in the container 200 is supplied outside through the common air passage L1.

[0066] Gas cylinder connection module 100

[0067] Figure 4 and Figure 5The gas cylinder connection module 100 that can be used for the above gas supply device is respectively shown, including a plurality of gas cylinder connection ports 101, an inflation channel L11, and a gas supply channel L12. The plurality of gas cylinder connection ports 101, the inflation channel L11, and the gas supply channel L12 are all arranged inside the gas cylinder connection module 100. Among them, an inflation one-way valve that only allows air to flow towards the gas cylinder connection port 101 is provided on the inflation channel L11, and a gas supply control valve 140 for controlling the gas supply pressure and / or flow rate of the gas cylinder connected to the gas cylinder connection port 101 is provided on the gas supply channel L12. Among them, the inflation one-way valve can be replaced with other forms of inflation control valves (such as a switch valve), as long as it can be manipulated to prevent air from flowing towards the inflation interface 102.

[0068] Thus, a gas cylinder can be connected to the gas cylinder connection port 101 of the gas cylinder connection module 100, and the gas cylinder can be inflated by using an inflation device connected to the inflation channel L11. The gas cylinder can be detachably connected to the gas cylinder connection port 101 in forms such as threads, or the gas cylinder can be directly integrally formed with the gas cylinder connection port 101. Since an inflation one-way valve is provided on the inflation channel L12, this one-way valve only allows air to flow from the inflation interface 102 towards the gas cylinder connection port 101. Thus, the gas output by the inflation device can be filled into the gas cylinder through the inflation channel L11. When no inflation operation is performed, the inflation one-way valve can prevent the gas in the gas cylinder from leaking through the inflation channel L11. Since the gas cylinder is inflated by connecting it to this gas cylinder connection module, there is no need to consider the adaptability of the connection joint between the inflation device and the gas cylinder. As long as the inflation device can be adapted to the inflation joint of the inflation channel L11, different specifications or quantities of gas cylinders connected to this gas cylinder connection module can be inflated.

[0069] Moreover, in the state where the gas cylinder is connected to this gas cylinder connection module, the user can obtain the gas stored in the gas cylinder through its gas supply channel L12, thus facilitating the flexible combination of this gas cylinder connection module with different specifications or quantities of gas cylinders as needed, and having advantages such as good versatility and convenient use. By providing the gas supply control valve 140 on the gas supply channel L12, the high-pressure gas in the gas cylinder can be reduced to an appropriate pressure and provided to the user through the gas supply interface 109 in a safe, stable, and gentle flow rate.

[0070] Specifically, the gas cylinder connection module 100 can include a module main body 110, an inflation joint 120, and a gas supply joint 130 connected to the module main body 110. Among them, the module main body 110 is provided with a plurality of gas cylinder connection ports 101 to be able to connect an appropriate number of one or more gas cylinders as needed. For example, as will be subsequently referred to Figure 5In detail, the module body 110 can be configured to include a housing and an installation cavity provided within the housing. For example, the gas cylinder 200, which is a gas cylinder, can be placed within the installation cavity and connected to the corresponding gas cylinder connection port 101. Each gas cylinder connection port 101 can be respectively communicated with the inflation channel L11 and the gas supply channel L12. Alternatively, each gas cylinder connection port 101 can be connected in series in sequence, such that the first gas cylinder connection port 101 among them is communicated with the inflation channel L11, and the last gas cylinder connection port 11 is communicated with the gas supply channel L12.

[0071] As Figure 5 shown in the preferred embodiment, the module body 110 includes a housing and an installation cavity inside the housing. The gas cylinder connection port 101 is provided on one side of the installation cavity. The gas cylinder 200 is connected to the gas cylinder connection port 101 and placed within the installation cavity. The gas cylinder connection port 101 is connected to the inflation joint 120 through the inflation channel L11 (not shown). An inflation device can be connected to the inflation joint 120 to supply pressurized gas into the inflation channel L11, and then inflate the gas cylinder 200 connected to the gas cylinder connection port 101. The gas cylinder connection port 101 is connected to the gas supply joint 130 through the gas supply channel L12. The gas supply joint 130 can be used to communicate with the user interface to supply the gas stored in the gas cylinder 200 to the user. The gas supply control valve 140 can be used to control the gas supply pressure and / or flow rate. Among them, as will be described subsequently in combination with Figure 7 and Figure 8 stated, the gas supply joint 130 can be integrated on the gas supply control valve 140, and the gas supply control valve 140 can also be integrated with a pressure indicating unit 104 and a pressure relief function, etc. The gas cylinder port of the gas cylinder 200 can be connected to the gas cylinder connection port 101 in a detachable manner or in an integrated manner, which will be described in detail subsequently in combination with Figures 13 to 16 That is to say, although Figures 13 to 16 shown in the figure, each gas cylinder 200 is only connected to the gas cylinder connection module 100 at the gas cylinder port, but the gas cylinder connection module 100 can also be configured in the form of having an installation cavity to encapsulate the gas cylinder 200 within the gas cylinder connection module 100 in the assembled state.

[0072] Further, the inflation connector 120 may include a quick-connect joint body for connecting to an inflation device, and the inflation check valve 103 may be integrally provided within the quick-connect joint body to form a quick-connect type one-way inflation connector. More specifically, the quick-connect joint body may be connected to the module body 110 by means such as screwing. A valve core guide rod and a return spring elastically abutted against the valve core guide rod may be provided therein. Under the action of the return spring, the valve core guide rod tends to remain in a position closing the passage in the quick-connect joint body, so as to prevent the gas in the gas cylinder from leaking out through the inflation passage L11 when no inflation operation is performed. When an inflation operation is carried out, the valve core guide rod can be pushed by the joint on the inflation device and displaced against the elastic force of the return spring, whereby the passage in the quick-connect joint body is opened, and the high-pressure gas can smoothly fill the gas cylinder connected to the gas cylinder connection port 101 through the inflation passage L11. After the inflation is completed, when the inflation device is removed, the valve core guide rod resets under the action of the return spring and automatically closes the inflation passage.

[0073] Further, in Figure 4 and Figure 5 the preferred embodiment shown, the gas supply connector 130 is integrally provided on the gas supply control valve 140. In addition, a pressure relief valve 105 and a pressure indicating unit 104 for indicating the air pressure magnitude in the gas supply passage L12 are also integrally provided on the gas supply control valve 140. A preferred embodiment thereof will be described in detail hereinafter in conjunction with Figure 7 and Figure 8 Thus, when it is necessary to release the stored gas, the pressure relief valve 105 can be operated to quickly release the gas in the gas cylinder. Alternatively, the user can plan the itinerary according to the remaining gas volume indicated by the pressure indicating unit 104 and reasonably arrange relevant plans. In some embodiments, the pressure relief valve 105 and the pressure indicating unit 104 (such as a pressure gauge) can be installed on the part of the gas supply passage L12 located on the module body 110.

[0074] In the gas cylinder connection module of the above preferred embodiment, an inflation connector 120 for connecting to an inflation device and a gas supply connector 130 for communicating with a user interface are connected to the module body 110, so as to be able to inflate the gas cylinder connected to the gas cylinder connection port 101 or obtain the gas stored therein from the gas cylinder.

[0075] In the above preferred embodiment, the inflation joint 120 and the gas supply joint 130 (gas supply control valve 140) can be selectively connected to the module body 110, thereby switching between the inflation working mode and the gas supply working mode. When the inflation joint 120 is connected to one end of the common air duct L1, an inflation device can be connected to the inflation joint 120 to inflate the gas cylinder 200 connected to the gas cylinder connection port 101 through the common air duct L1; when the inflation joint 120 is removed and replaced by connecting the gas supply joint 130 (gas supply control valve 140) to one end of the common air duct L1, the gas stored in the gas cylinder 200 connected to the gas cylinder connection port 101 can be supplied outward through the common air duct L1. As shown in combination with Figure 6 As shown, a common air duct check valve 115 can be provided at one end of the common air duct L1 away from the branch air duct L2. The common air duct check valve 115 is configured to prevent the gas in the common air duct L1 from flowing outwards when the inflation joint 120 and the gas supply joint 130 are not connected to the common air duct L1, and when either the inflation joint 120 or the gas supply joint 130 is connected to the common air duct L1, the common air duct check valve 115 opens to allow inflation and gas supply. Figure 6 The interaction form between the inflation joint 120 and the common air duct check valve 115 is shown in. Among them, as described above, an inflation check valve 103 is integrally provided in the inflation joint 120. When the inflation joint 120 is connected to the module body 110 and connected to a predetermined position, the inflation check valve 103 interacts with the common air duct check valve 115 and opens simultaneously. Similarly, the gas supply joint 130 (gas supply control valve 140) can also act on the common air duct check valve 115 in a similar manner to keep the common air duct L1 connected when supplying gas outward.

[0076] In other preferred embodiments described subsequently, the gas cylinder connection module can be configured to use a single joint to connect the inflation device and the gas supply pipeline, thereby significantly improving its compactness. For example, the gas cylinder connection module can be configured to have an inflation and gas supply common joint 152 (as shown in Figures 9 to 12 ), and use a switching unit 160 to switch between the inflation mode and the gas supply mode: in the inflation mode, connect the inflation device to the inflation and gas supply common joint 152 to be able to inflate the gas cylinder connected to the gas cylinder connection port 101; in the gas supply mode, the gas supply pipeline can be connected to the inflation and gas supply common joint 152, so as to be able to obtain the gas stored therein from the gas cylinder connected to the gas cylinder connection port 101.

[0077] Referring to Figures 9 to 12As shown, in another preferred embodiment of the present utility model, the gas cylinder connection module includes a module base 150 and a switching unit 160 adjustably mounted on the module base 150 (the module base 150 and the switching unit 160 as a whole can be regarded as the module main body). Among them, a gas cylinder connection port 101 and an inflation and supply common joint 152 are provided on the module base 150. An inflation channel L11 and a supply channel L12 are formed in the switching unit 160, and the switching unit 160 can be selectively switched so that the gas cylinder connection port 101 and the inflation and supply common joint 152 are interconnected through the inflation channel L11 or the supply channel L12.

[0078] Thus, the gas cylinder can be connected to the module base 150 through the gas cylinder connection port 101, and the position of the switching unit 160 relative to the module base 150 can be adjusted so that the gas cylinder connection port 101 (i.e., the gas cylinder) and the inflation and supply common joint 152 are interconnected through the inflation channel L11 or the supply channel L12 and the common airway. In this preferred embodiment, the inflation check valve 103 and the supply control valve 140 are both provided on the switching unit 160 and are arranged corresponding to the inflation channel L11 and the supply channel L12. When it is necessary to inflate the gas cylinder, as Figure 10 shown, the switching unit 160 is adjusted so that the gas cylinder connection port 101 and the inflation and supply common joint 152 are connected through the inflation channel L11 and the common airway. Thus, the gas cylinder can be inflated through the inflation channel L11 and the common airway by connecting the inflation device to the inflation and supply common joint 152; when it is necessary to supply gas to the user, as Figure 12 shown, the switching unit 160 is adjusted so that the gas cylinder connection port 101 and the inflation and supply common joint 152 are connected through the supply channel L12 and the common airway. Thus, the gas in the gas cylinder connected to the gas cylinder connection port 101 can be supplied to the inflation and supply common joint 152 through the supply channel L12 and the common airway, and then respiratory gas can be provided to the user.

[0079] The switching unit 160 can be arranged to be adjusted between different connection states in various ways. For example, the switching unit 160 can be rotatably mounted on the module base 150 so that the gas cylinder connection port 101 and the inflation and supply common joint 152 are interconnected through the inflation channel L11 or the supply channel L12 when rotated to different orientations relative to the module base 150.

[0080] In the figure, only one of the multiple gas cylinder connection ports 101 of the module base 150 is shown. Different gas cylinder connection ports 101 can all be connected to the common air passage L1 through the branch air passage L2. Thus, the user can inflate the gas cylinder connected to this gas cylinder connection port 101 or obtain breathing gas from this gas cylinder. This gas cylinder connection module can perform inflation and gas supply operations in the same manner as the above-mentioned preferred embodiment. For this purpose, air passages and control valves corresponding to different gas cylinder connection ports can be correspondingly provided in the module base 150.

[0081] Referring to Figure 11 and Figure 12 shown, in another preferred embodiment of the present invention, the gas cylinder connection port 101 in the above-mentioned preferred embodiment described in combination with Figures 9 to 12 can be set to be adapted to connect to the module body connection port 151 of the module body 110 in the above-mentioned preferred embodiment described in combination with Figure 4 and Figure 5 described, thereby forming a gas cylinder connection module formed by connecting the components shown in Figure 11 and Figure 12 to the module body 110 provided with multiple gas cylinder connection ports 101.

[0082] Specifically, this gas cylinder connection module includes a module body 110 provided with multiple gas cylinder connection ports 101, a module base 150 connected to the module body 110, and a switching unit 160 adjustably installed on the module base 150. An inflation and gas supply common joint 152 is provided on the module base 150. An inflation passage L11 and a gas supply passage L12 are formed in the switching unit 160. This switching unit 160 can be selectively switched so that the gas cylinder connection port 101 and the inflation and gas supply common joint 152 are communicated with each other through the inflation passage L11 or the gas supply passage L12.

[0083] Referring to Figure 17 , in another preferred embodiment of the present invention, an output interface LP is provided at one end of the common air passage L1 away from the container 200. For control, refer to Figure 5 . The output interface LP can be provided on the module body 110 of the container connection module for connecting an inflation control valve or a gas supply control valve 140. A first one-way valve (i.e., the above-mentioned common air passage one-way valve 115) is provided in the output interface LP, and a second one-way valve is provided in the inflation control valve and the gas supply control valve 140. When the inflation control valve or the gas supply control valve 140 is connected to the output interface LP, the first one-way valve and the second one-way valve cooperate to enable the common air passage L1 to be in gas path communication with the inflation control valve or the gas supply control valve 140. For details, please refer to the foregoing Figure 5Description. The output interface LP can be threadedly connected to the inflation control valve or the gas supply control valve. The first one-way valve can be opened when the predetermined position is reached by controlling the threaded insertion dimension. For specific details, please refer to the description of relevant similar structures in the safety connection structure.

[0084] Refer to Figure 18 , in another preferred embodiment of the present utility model, compared with Figure 17 the embodiment, the structures of the first one-way valve and the second one-way valve are cancelled. Specifically, the common air passage L1 includes an on-off switch LS provided at the front end of the output interface LP, and the on-off switch LS is used to control the on-off of the common air passage L1. When selecting gas supply or inflation, the inflation control valve and the gas supply control valve 140 need to be replaced. To ensure that the gas cylinder connection module does not leak air during replacement, it is only necessary to turn off the control switch 110 in advance.

[0085] The above various embodiments can be combined with each other. For example Figures 6 to 8 the inflation joint 120 and the gas supply control valve 140 shown in

[0086] can also be selectively connected to the inflation and gas supply common joint 152. Figure 11 and Figure 12 In other embodiments, the components shown in

[0087] Gas supply control valve 140

[0088] Figure 7 and Figure 8

[0089] show a cross-sectional structural view of a gas supply control valve integrated with functions of gas supply, pressure relief, and pressure indication. Among them, the gas supply control valve 140 includes a mounting seat 143 and a valve body detachably mounted to the mounting seat 143, and is arranged such that: when there is pressure in the gas supply passage L12, the valve body cannot be removed from the mounting seat 143; when there is no pressure in the gas supply passage L12, the valve body can be removed from the mounting seat 143. For this purpose, the gas supply control valve 140 can be provided with a locking structure for switching between a locked state and an unlocked state: in the locked state, the locking structure locks the valve body to the mounting seat 143 to prevent the valve body from being removed from the mounting seat 143; in the unlocked state, the locking structure releases the valve body to allow the valve body to be removed from the mounting seat 143. Thus, when the gas supply device has pressure, the valve body cannot be disassembled to ensure its reliable use; after pressure relief, when there is no pressure inside, the valve body can be disassembled, which can effectively prove that the pressure relief has been completed and is convenient for subsequent transportation.Among them, the mounting seat 143 of the air supply control valve 140 can be fixedly arranged on the above-mentioned module body, and the valve body is detachably connected to the mounting seat 143 through a threaded structure. In the illustrated preferred embodiment, the air supply control valve 140 is also integrally provided with a pressure indicating unit 104, which can indicate the gas pressure in the air supply passage L12. In the illustrated preferred embodiment, the pressure indicating unit 104 has the above-mentioned locking function. Specifically, the mounting seat 143 can have a tubular body, and an installation groove is formed in the tubular body. The top of the installation groove is open, and a through hole communicating with the lumen of the tubular body is provided at the bottom. The pressure indicating unit 104 is generally columnar and is hermetically installed in the installation groove through the top opening of the installation groove. An indicator through hole corresponding to the top opening of the installation groove is provided on the valve body (i.e., the housing 331 described later). The pressure indicating unit 104 is arranged to be able to extend out of the indicator through hole under the action of the gas pressure in the inner cavity of the tubular body and retract into the installation groove when the gas pressure action is lost. Through this setting, the pressure indicating unit 104 can not only indicate the gas pressure in the air supply passage L12, but also realize that the valve body cannot be removed when there is pressure in the air supply passage L12; the valve body can be removed when there is no pressure in the air supply passage L12, improving the use safety and convenience of the gas supply device.

[0090] Continuing to refer to Figure 7 and Figure 8 As shown, the air supply control valve can include a housing 141 and a piston assembly 142 rotatably arranged therein. Among them, the housing 141 can be connected to the module body 110 (such as through the above-mentioned mounting seat 143), and includes a piston chamber 141a defined inside, an air inlet 141b and an air outlet 141c (equivalent to the aforementioned air supply interface) communicating with the piston chamber 141a; the piston assembly 142 is rotatably installed in the piston chamber 141a and has a large air hole 142a and a small air hole 142b communicating with the air inlet 141b. The piston assembly 142 can be controlled to rotate in the piston chamber 141a so that the air supply joint can be switched between a sealed state, an air supply state and a pressure relief state. In the illustrated position, the air supply joint is in a pressure relief state, and the large air hole 142a of the piston assembly 142 communicates with the air outlet 141c of the housing 141, whereby the pressure can be quickly released. When the piston assembly 142 is rotated so that its small air hole 142b is all or partially communicated with the air outlet 141c of the housing 141, the air supply joint is in an air supply state, and an air flow with an appropriate flow rate and pressure can be provided to the user through the air outlet 141c. When the piston assembly 142 is rotated so that both its large air hole 142a and small air hole 142b are misaligned with the air outlet 141c, the passage of the air supply passage is cut off. Thus, the air supply joint can realize various functions such as on-off control of the air supply passage, air supply flow rate adjustment and quick pressure relief.

[0091] Gas cylinder 200 and its safety connection structure with the gas cylinder connection module 100

[0092] The gas supply device of the present utility model may include a gas cylinder connection module 100 and a plurality of gas cylinders 200 connected thereto. The gas cylinder 200 may be, for example, an oxygen container storing oxygen or other breathing gases. Among them, the gas cylinder connection module 100 has a plurality of gas cylinder connection ports, and the gas cylinder 200 can be connected to the gas cylinder connection module 100 through the gas cylinder connection ports. The gas cylinder connection module 100 also has a common airway L1 and branch airways L2 respectively corresponding to and connecting between each gas cylinder connection port and the common airway L1. The breathing gas stored in each gas cylinder 200 can be supplied to the common airway L1 through the corresponding branch airway L2 so that the user can obtain the breathing gas through the common airway L1. For this purpose, the gas cylinder connection module 100 may be provided with a gas supply joint for connecting the common airway L1 to the user interface (such as through a breathing tube). Thus, the gases stored in the plurality of gas cylinders 200 connected to the gas cylinder connection ports can be respectively merged into the common airway L1 through the corresponding branch airways L2 for the user to use. Therefore, the gas supply device can have a relatively large gas capacity, which is convenient for meeting the needs of multiple people for oxygen inhalation, long-term oxygen supply, or simultaneous oxygen inhalation of multiple people.

[0093] In this gas supply device, an air flow control unit is provided at the gas outlet of the gas cylinder 200. The air flow control unit is configured to limit the air outlet flow rate of the gas cylinder 200 at a predetermined air pressure at least before a predetermined position where the corresponding gas cylinder 200 is connected to the gas cylinder connection port. Thus, during the process of connecting the gas cylinder to the gas cylinder connection module 100, the air flow control unit can limit the air outlet flow rate and pressure of the gas cylinder, thereby effectively preventing the gas cylinder from being bounced off, and thus having relatively high use safety. The air flow control unit described herein may be, for example, Figures 13 to 14 or Figure 16 the gas cylinder one-way valve 202 shown in Figure 15 or Figure 16 the throttle orifice 201 shown in , which will be described in detail later.

[0094] In addition, an on-off control unit capable of preventing the air flow from flowing from the common airway L1 to the corresponding gas cylinder 200 may also be provided on the branch airway L2 and / or at the gas outlet of the gas cylinder 200. For example, the on-off control unit may be a branch flow regulating valve 113 provided on the branch airway L2 as described in detail later. Thus, when the remaining gas volume in a certain gas cylinder 200 is insufficient, or when the pressure in a certain gas cylinder 200 is significantly higher than the pressure in other gas cylinders 200, the on-off control unit can prevent the gas in the common airway L1 from flowing back to the low-pressure gas cylinder by cutting off the communication flow path between the low-pressure gas cylinder and the common airway L1, so that it will not affect the gas supply from other gas cylinders to the main airway and the user.

[0095] In Figure 13 and Figure 14In the preferred embodiment shown, a branch air passage check valve 114 is provided in the branch air passage L2, and the branch air passage check valve 114 is arranged to interact with the cylinder check valve 202 and open simultaneously only when the gas cylinder 200 is connected to reach a predetermined position.

[0096] Continuing to refer to Figure 13 and Figure 14 As shown, the gas supply device of this preferred embodiment further includes a branch flow regulating valve 113 that can serve as the above-mentioned on-off control unit. The branch flow regulating valve 113 is arranged on the branch air passage L2 and can be adjusted to switch the on-off state of the branch air passage L2 and regulate the gas flow from the corresponding gas cylinder 200 to the common air passage L1. Thus, when the remaining gas volume in a certain gas cylinder 200 is insufficient (for example, a pressure indicating element can be provided on the gas cylinder to determine its remaining gas volume or pressure), the branch flow regulating valve 113 on its corresponding branch air passage L2 can be controlled to switch it to the position of cutting off the branch air passage L2 to prevent the gas in the common air passage L1 from flowing back to the low-pressure gas cylinder 200. At the same time, the branch flow regulating valve 113 can be used to regulate the gas flow from the corresponding gas cylinder 200 to the common air passage L1, which can be used to control the output flow of the common air passage L1, facilitating the user to adjust according to the remaining gas volume and gas volume requirements.

[0097] The branch flow regulating valve 113 can be arranged in a variety of suitable structural forms. In the illustrated preferred embodiment, the branch flow regulating valve 113 has a valve stem rotatably connected to the module body. The valve stem has a throttling opening. When the valve stem is rotated to different positions, the throttling opening can communicate with or cut off the branch air passage L2, or has throttling openings of different sizes to switch the on-off state of the branch air passage L2 or regulate the gas flow from the corresponding gas cylinder 200 to the common air passage L1. As Figure 13 and Figure 14 shown, when the gas volume in the gas cylinder 200 on the right side in the illustration is insufficient, or when disassembling and assembling a certain gas cylinder 200, or in other situations where it is necessary to cut off the connection between the common air passage L1 and the gas cylinder 200, the valve stem of the branch flow regulating valve 113 on the branch air passage L2 corresponding to the gas cylinder 200 can be rotated so that its throttling opening is cut off from the branch air passage L2, thus avoiding affecting the gas supply in the common air passage L1. By adjusting the size of the throttling opening, it is convenient to freely switch different gas supply modes and control the gas supply flow.

[0098] As described above, during the process of connecting the gas cylinder 200 to the common gas path such as the gas cylinder connection module 100, the high-pressure gas instantaneously sprays out from the gas outlet of the cylinder body, which is likely to cause the cylinder body to bounce off, posing a relatively high safety risk. Therefore, in Figure 13 and Figure 14In the preferred embodiment shown, the gas cylinder port of the gas cylinder 200 is detachably connected to the gas cylinder connection port, and a gas cylinder one-way valve 202 is provided at the gas outlet of the gas cylinder 200. The gas cylinder one-way valve 202 is configured to remain closed during the process of connecting the gas cylinder 200 to the gas cylinder connection port and to open until the gas cylinder 200 is connected to a predetermined position. Thus, in a state where the gas cylinder 200 and the gas cylinder connection port of the gas cylinder connection module 100 are not fully connected, the gas cylinder one-way valve 202 remains closed, that is, the gas cylinder one-way valve 202 limits the gas outlet flow rate of the gas cylinder 200 to 0 as the aforementioned gas flow control valve; when the gas cylinder 200 is connected to a predetermined position, the gas cylinder one-way valve 202 is opened to supply breathing gas to the branch airway L2 of the gas cylinder connection module 100. By this arrangement, it is possible to prevent the gas cylinder body from bouncing off due to the instantaneous ejection of high-pressure gas from the gas outlet during the process of connecting the gas cylinder 200 to the gas cylinder connection module 100, effectively improving the use safety of the gas supply device. In addition, by providing the gas cylinder one-way valve 202 at the gas outlet of the gas cylinder 200, the gas cylinder 200 itself can be sealed, and the gas cylinder 200 can be quickly depressurized by opening the gas cylinder one-way valve 202 when needed.

[0099] Typically, the gas cylinder 200 can be connected to the gas cylinder connection port of the gas cylinder connection module 100 by a threaded connection. For this purpose, an internal thread can be formed at the gas cylinder connection port, and an external thread for screwing into the internal thread is provided at the gas cylinder port of the gas cylinder 200. The gas cylinder one-way valve 202 is configured to remain closed during the process of screwing the gas cylinder port of the gas cylinder 200 to the gas cylinder connection port until a predetermined number of screwing turns is reached. Thus, setting the opening timing of the gas cylinder one-way valve 202 based on the number of screwing turns between the gas cylinder 200 and the gas cylinder connection port can effectively ensure that the connection relationship established between the gas cylinder 200 and the gas cylinder connection port when the gas cylinder one-way valve 202 is opened can prevent the gas cylinder body from bouncing off. In other embodiments, the gas cylinder 200 can also be configured to be connected to the gas cylinder connection module 100 by other means such as snap connection.

[0100] The gas cylinder one-way valve 202 can also be configured in a variety of suitable structural forms. In the illustrated preferred embodiment, the gas cylinder one-way valve 202 includes a valve body 2021 formed with an air outlet, a valve stem 2022 extending into the valve body 2021 and capable of moving between an open position and a closed position, and a return spring 2023 elastically abutted against the valve stem 2022. The return spring 2023 causes the valve stem 2022 to tend to remain in the closed position, thereby keeping the gas cylinder 200 sealed by itself in a state where no connection is implemented or when it is not connected to a predetermined position. In contrast, a push rod 111 is provided at one end of the branch air passage L2 facing the gas cylinder connection port. During the process of connecting the gas cylinder 200 to the gas cylinder connection port, the push rod 111 pushes the valve stem 2022 toward the open position against the elastic force of the return spring 2023, so as to open the gas cylinder one-way valve 202. Thus, through the above-mentioned threaded connection relationship and the relative arrangement relationship between the push rod 111 and the valve stem 2022, the sequence of the threaded insertion and the opening of the gas cylinder one-way valve 202 can be effectively controlled, thereby preventing the gas cylinder from being bounced open at the moment when the air outlet opens during the gas cylinder connection process, effectively protecting the operator and users from harm, and making the connection safer, more reliable and more user-friendly.

[0101] Further, in order to ensure the sealing performance, in the above-mentioned gas cylinder one-way valve 202, a tapered portion gradually narrowing in the direction away from the return spring 2023 can be formed in the inner cavity of the valve body 2021, and a sealing ring for sealingly cooperating with the tapered portion can be provided on the valve stem 2022, so as to sealingly fit the inner wall of the valve body 2021 with the sealing ring when the valve stem 2022 is not pushed, thereby preventing the gas in the gas cylinder from leaking.

[0102] In addition, a gasket 112 arranged around the inlet of the branch air passage L2 can be provided in the gas cylinder connection port. In the state where the gas cylinder 200 is connected to the gas cylinder connection port, the valve body 221 is sealingly abutted against the gasket 112, so as to establish a sealed communication relationship between the gas cylinder 200 and the branch air passage L2, and prevent the breathing gas from escaping at the connection position.

[0103] Figure 15 Another preferred embodiment of the gas supply device is provided. The gas supply device is combined with the above Figure 13 and Figure 14Compared with the described preferred embodiment, the branch flow regulating valve provided on the branch airway L2 and the cylinder check valve at the outlet of the cylinder 200 are omitted, and each cylinder 200 is fixedly connected to the cylinder connection module 100. Through this setting, the production cost can be saved and the structural complexity can be reduced compared with the above-mentioned preferred embodiment. At the same time, the airway check valve can also be omitted, so that it is convenient to use the inflation device connected to the cylinder connection module 100 to inflate the cylinder with a lower air pressure. In this gas supply device, a throttle hole 201 is provided at the outlet of the cylinder 200 to limit the gas flow from the cylinder 200 to the common airway L1 when the corresponding cylinder 200 has a predetermined air pressure through the throttle hole 201. For example, when the air pressure in the cylinder 200 is 2 atmospheres, the outlet gas flow of the cylinder 200 does not exceed 10 L / min. Preferably, when the air pressure in the cylinder 200 is 2 atmospheres, the outlet gas flow of the cylinder 200 is 5 L / min. In addition, the gasket 112 and the like in the gas supply device of this preferred embodiment are basically the same as those described in combination with Figure 13 and Figure 14 the described preferred embodiment and will not be elaborated here.

[0104] Figure 16 A gas supply device of another preferred embodiment is provided. This gas supply device is generally the same as the preferred embodiment described in combination with Figure 13 and Figure 14 and has the same cylinder check valve 202, ejector rod 111, threaded connection structure (the internal thread 15 at the cylinder connection port and the external thread 23 at the cylinder port), branch airway check valve, gasket 112, etc., which will not be elaborated here. This gas supply device omits the branch flow control valve provided on the branch airway L2, and a throttle hole 201 is provided at the outlet of the cylinder 200 to limit the gas flow from the cylinder 200 to the common airway L1 when the corresponding cylinder 200 has a predetermined air pressure through the throttle hole 201. For example, when the air pressure in the cylinder 200 is 2 atmospheres, the outlet gas flow of the cylinder 200 does not exceed 10 L / min. Preferably, when the air pressure in the cylinder 200 is 2 atmospheres, the outlet gas flow of the cylinder 200 is 5 L / min.

[0105] The preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited thereto. Within the technical concept scope of the present invention, various simple modifications can be made to the technical solutions of the present invention, including combining each specific technical feature in any suitable way. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods. But these simple modifications and combinations should equally be regarded as the content disclosed by the present invention and all fall within the protection scope of the present invention.

Claims

1. A gas cylinder connection module, characterized in that, The gas cylinder connection module includes a gas cylinder connection port (101), an inflation channel (L11), and a gas supply channel (L12). An inflation check valve (103) that only allows air flow towards the gas cylinder connection port (101) is provided on the inflation channel (L11). A gas supply control valve (140) for controlling the gas supply pressure and / or flow rate of the gas cylinder connected to the gas cylinder connection port (101) is provided on the gas supply channel (L12). The gas cylinder connection module includes a module body (110) provided with a plurality of the gas cylinder connection ports (101).

2. The gas cylinder connection module according to claim 1, characterized in that, The gas cylinder connection module includes an inflation joint (120) and a gas supply joint (130) connected to the module body (110).

3. The gas cylinder connection module according to claim 2, characterized in that, The inflation joint (120) includes a quick-connect joint body for connecting to an inflation device, and the inflation check valve (103) is integrally provided within the quick-connect joint body.

4. The gas cylinder connection module according to claim 2, characterized in that, The gas supply joint (130) is integrally provided on the gas supply control valve (140), and / or the gas supply control valve (140) is integrally provided with a pressure relief valve (105) and / or a pressure indicating unit (104) for indicating the air pressure magnitude within the gas supply channel (L12).

5. The gas cylinder connection module according to claim 4, characterized in that, The gas supply control valve (140) includes: a housing (141), the housing (141) being connected to the module body (110) and including a piston chamber (141a) defined therein, an air inlet (141b), and an air outlet (141c) communicating with the piston chamber (141a); and a piston assembly (142), the piston assembly (142) being rotatably mounted within the piston chamber (141a) and having a large air hole (142a) and a small air hole (142b) communicating with the air inlet (141b), wherein the piston assembly (142) is configured to be able to switch between a sealed state, a gas supply state, and a pressure relief state by rotating relative to the piston chamber (141a), wherein: in the sealed state, both the large air hole (142a) and the small air hole (142b) are misaligned with the air outlet (141c); in the gas supply state, the small air hole (142b) is correspondingly communicated with the air outlet (141c); in the pressure relief state, the large air hole (142a) is correspondingly communicated with the air outlet (141c).

6. The gas cylinder connection module according to claim 1, characterized in that, The gas cylinder connection module includes an inflation and gas supply common joint (152) connected to the module body (110).

7. The gas cylinder connection module according to claim 6, wherein The module body (110) includes a module base (150) and a switching unit (160) adjustably mounted on the module base (150). The gas cylinder connection port (101) and the inflation and gas supply common joint (152) are provided on the module base (150). The inflation channel (L11) and the gas supply channel (L12) are formed within the switching unit (160), and the switching unit (160) can be selectively switched so that the gas cylinder connection port (101) and the inflation and gas supply common joint (152) communicate with each other through the inflation channel (L11) or the gas supply channel (L12).

8. The gas cylinder connection module according to claim 7, characterized in that, The switching unit (160) is rotatably mounted to the module base (150) such that when rotated to different orientations relative to the module base (150), the gas cylinder connection port (101) and the inflation and gas supply common joint (152) are interconnected through the inflation channel (L11) or the gas supply channel (L12).

9. The gas cylinder connection module according to claim 1, characterized in that, The gas cylinder connection module includes a module base (150) connected to the module body (110) and a switching unit (160) adjustably mounted on the module base (150). The module base (150) is provided with an inflation and gas supply common joint (152). The inflation channel (L11) and the gas supply channel (L12) are formed within the switching unit (160), and the switching unit (160) can be selectively switched such that the gas cylinder connection port (101) and the inflation and gas supply common joint (152) are interconnected through the inflation channel (L11) or the gas supply channel (L12).

10. A breathing gas supply device, characterized in that, It includes the gas cylinder connection module according to any one of claims 1 to 9 and a gas cylinder connected to the gas cylinder connection port (101).

11. The breathing gas supply device according to claim 10, characterized in that, A plurality of the gas cylinders are connected to the gas cylinder connection module, and the volume of a single gas cylinder is less than or equal to 1 L.

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