Pressurized oxygen enrichment system for engineering machinery and engineering machinery

Abstract

The present invention belongs to the field of engineering machinery, and discloses a pressurized oxygen-enriched system for engineering machinery equipment and engineering machinery equipment, the pressurized oxygen-enriched system comprising: an air-conditioning indoor unit, comprising a fan, an indoor unit air inlet, an indoor unit air outlet and an indoor unit air supply outlet; an engine, comprising an engine air inlet; an oxygen tank, comprising an oxygen tank air outlet capable of being connected to the indoor unit air inlet; an external circulation pipeline, wherein the pipe openings at both ends can be respectively connected to the atmosphere and the indoor unit air inlet, and an atmospheric pressure sensor and an atmospheric oxygen content sensor are arranged in the pipe; in a plateau environment, the air-conditioning indoor unit can respectively introduce gas from the external circulation pipeline and the oxygen tank, and shunt the gas through the indoor unit air outlet and the indoor unit air supply outlet to the indoor environment and the engine of the engineering machinery equipment, so as to pressurize and oxygenate the indoor environment and the engine respectively, thereby effectively ensuring the normal operation of the equipment and operators in the plateau environment and maintaining their working state.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering machinery, and in particular to a pressurization and oxygenation system for engineering machinery equipment and the engineering machinery equipment. Background Art

[0002] When construction machinery equipment needs to operate in high-altitude areas, the low-pressure, low-temperature, and oxygen-deficient environment will make it difficult for the equipment's engine to start normally. For operators in the control room, since the control room uses internal circulation air conditioning, the indoor air will be reused repeatedly, and there is a lack of fresh air supply, and the air quality is difficult to guarantee. In addition, when using internal circulation air conditioning, the indoor air pressure will gradually be lower than the external atmospheric pressure. External dust can easily enter the room through the door or window gaps of the control room under the action of pressure difference, accelerating indoor air pollution. In addition, the low-pressure, low-temperature, and oxygen-deficient environment can easily cause physical discomfort to operators, making it difficult to maintain a working state for a long time. Therefore, engineering operations in high-altitude areas are a great challenge for both equipment and operators. Summary of the invention

[0003] In response to at least one of the above-mentioned defects or shortcomings of the prior art, the present invention provides a pressurization and oxygenation system for engineering machinery equipment and engineering machinery equipment, which can pressurize and oxygenate the indoor environment and engine of the equipment respectively in a plateau environment, so as to ensure the normal operation of the equipment and operators.

[0004] To achieve the above-mentioned object, the first aspect of the present invention provides a pressurization and oxygenation system for engineering machinery equipment, which comprises:

[0005] The indoor unit of the air conditioner comprises a fan, an indoor unit air inlet formed on the air inlet side of the fan, and an indoor unit air outlet and an indoor unit air supply outlet formed on the air outlet side of the fan;

[0006] an engine, including an engine air intake;

[0007] an oxygen tank, comprising an oxygen tank outlet capable of communicating with an air inlet of the indoor unit; and

[0008] An external circulation pipeline, the two ends of which are respectively connected to the atmosphere and the air inlet of the indoor unit, and an atmospheric pressure sensor for detecting atmospheric pressure and an atmospheric oxygen content sensor for detecting atmospheric oxygen content are provided in the pipeline;

[0009] When the atmospheric pressure is lower than the preset safe atmospheric pressure and the atmospheric oxygen content is lower than the preset safe atmospheric oxygen content, the air-conditioning indoor unit can respectively introduce gas from the external circulation pipeline and the oxygen tank and divert the gas through the indoor unit air outlet and the indoor unit air supply outlet to the indoor environment of the engineering machinery equipment and the engine, so as to pressurize and oxygenate the indoor environment and the engine respectively.

[0010] Optionally, the pressurized and oxygenated system further includes a master controller, the atmospheric pressure sensor and the atmospheric oxygen content sensor communicate with the master controller respectively, and the master controller is configured as follows:

[0011] When the atmospheric pressure is lower than the safe atmospheric pressure and the atmospheric oxygen content is lower than the safe atmospheric oxygen content, the pressurization and oxygenation system is controlled to pressurize and oxygenate the indoor environment and the engine respectively.

[0012] Optionally, the pressurized oxygen enrichment system further includes an air supply pipeline and a pipeline outlet valve body arranged in the air supply pipeline, and an air supply pipeline air inlet and an air supply pipeline air outlet are respectively formed at both ends of the air supply pipeline;

[0013] During the process of supercharging and oxygenating the engine, the indoor unit air supply outlet, the air supply pipeline inlet and the air supply pipeline outlet are connected in sequence. When the pipeline outlet valve body is in the open state, the air supply pipeline outlet and the engine air inlet are connected. When the pipeline outlet valve body is in the closed state, the pipeline outlet valve body cuts off the connection between the air supply pipeline outlet and the engine air inlet.

[0014] Optionally, the pressurized oxygen-enriched system further includes a master controller, a pipe gas pressure sensor for detecting the gas pressure in the pipe of the air supply pipeline, and a pipe gas oxygen content sensor for detecting the oxygen content of the gas in the pipe of the air supply pipeline, the pipe gas pressure sensor and the pipe gas oxygen content sensor communicate with the master controller respectively, and the master controller is configured as follows:

[0015] During the process of supercharging and oxygenating the engine, when the gas pressure in the pipe is lower than the safe atmospheric pressure and / or the oxygen content of the gas in the pipe is lower than the safe atmospheric oxygen content, the pipeline outlet valve body is controlled to close to cut off the connection between the air supply pipeline outlet and the engine air intake.

[0016] Optionally, the pressurized oxygen-enriched system further includes a master controller, a pipe gas pressure sensor for detecting the gas pressure in the pipe of the air supply pipeline, and a pipe gas oxygen content sensor for detecting the oxygen content of the gas in the pipe of the air supply pipeline, the pipe gas pressure sensor and the pipe gas oxygen content sensor communicate with the master controller respectively, and the master controller is configured as follows:

[0017] During the process of supercharging and oxygenating the engine, when the gas pressure in the pipe is not lower than the safe atmospheric pressure and the oxygen content of the gas in the pipe is not lower than the safe atmospheric oxygen content, the pipeline outlet valve body is controlled to open to connect the air supply pipeline outlet and the engine air inlet.

[0018] Optionally, the engine further comprises an engine controller, the pipe gas pressure sensor and the pipe gas oxygen content sensor communicate with the engine controller respectively, and the engine controller is configured as follows:

[0019] When the engine is started under the condition of supercharging and oxygenation and the air outlet of the air supply pipeline is connected to the air inlet of the engine, the fuel injection amount of the engine is controlled and adjusted according to the gas pressure in the pipe and the oxygen content of the gas in the pipe.

[0020] Optionally, the engine further comprises an engine controller, a speed sensor for detecting the engine speed, and an air filter pipe assembly capable of connecting the atmosphere and the engine air intake, the speed sensor and the master controller communicate with the engine controller respectively, and the master controller is configured as follows:

[0021] When the engine is started under supercharging and oxygenation conditions and the air outlet of the air supply pipeline is connected to the engine air intake, when the engine speed increases to a level not lower than a preset successful starting speed, the pipeline air outlet valve body is controlled to close to cut off the connection between the air outlet of the air supply pipeline and the engine air intake.

[0022] Optionally, a pipeline air inlet valve body is also provided in the air supply pipeline. When the pipeline air inlet valve body is in the open state, the indoor unit air supply outlet, the air supply pipeline air inlet and the air supply pipeline outlet are connected in sequence. When the pipeline air inlet valve body is in the closed state, the pipeline air inlet valve body at least cuts off the connection between the indoor unit air supply outlet and the air supply pipeline outlet.

[0023] Optionally, the pressurized and oxygenated system also includes an internal and external circulation regulating air duct, which is connected to the indoor unit of the air conditioner, and the internal and external circulation regulating air duct is formed with an air duct outlet connected to the indoor unit air inlet, and an air duct outer circulation air inlet and an air duct inner circulation air inlet which can be respectively connected to the air duct outlet, and the external circulation pipeline can be connected to the indoor unit air inlet through the air duct outer circulation air inlet.

[0024] Optionally, the air-conditioning indoor unit is arranged in a horizontal direction, and the internal and external circulation regulating air duct is arranged to extend upward from a lateral side of the air-conditioning indoor unit, the top end portion of the internal and external circulation regulating air duct is formed with the air duct outer circulation air inlet and the air duct inner circulation air inlet, the bottom end portion of the internal and external circulation regulating air duct is formed with the air duct outlet, and the top end portion of the internal and external circulation regulating air duct is provided with a damper valve body capable of adjusting the relative opening of the air duct outer circulation air inlet and the air duct inner circulation air inlet.

[0025] A second aspect of the present invention provides an engineering machinery equipment, which includes the above-mentioned pressurization and oxygenation system for engineering machinery equipment.

[0026] Through the above technical scheme, the pressurized oxygen-enriched system of the present invention forms an air path association between the indoor unit of the air conditioner and the engine, and cooperates with the setting of the external circulation pipeline and the oxygen tank, so that when the atmospheric pressure detected by the atmospheric pressure sensor arranged in the external circulation pipeline is lower than the preset safe atmospheric pressure, and the atmospheric oxygen content detected by the atmospheric oxygen content sensor arranged in the external circulation pipeline is lower than the preset safe atmospheric oxygen content, the system can deliver the oxygen in the oxygen tank and the atmosphere of the external environment to the indoor unit of the air conditioner, and the indoor unit of the air conditioner can then divert the gas to the indoor environment (such as the control room) and the engine of the engineering machinery equipment. The supplement of the gas can not only increase the air oxygen content in the indoor environment and the engine, but also increase the air pressure, thereby respectively pressurizing and oxygenating the indoor environment and the engine of the equipment, ensuring that the engine can start normally, ensuring that fresh air can be added to the indoor environment, improving the air quality, and ensuring that the air pressure in the indoor environment is greater than the external atmospheric pressure, preventing external dust from entering the interior through the door or window gaps, preventing the formation of a low-temperature, low-pressure, and oxygen-deficient environment indoors, and allowing the operator to maintain a sense of comfort. It can be seen that the present invention is conducive to ensuring the normal operation of the equipment and the operator for a long time and maintaining their working state.

[0027] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0029] Figure 1 It is a schematic diagram of the principle of a pressurized and oxygenated system in a specific embodiment of the present invention;

[0030] Figure 2 A control principle diagram of a pressurized and oxygenated system in a specific embodiment of the present invention;

[0031] Figure 3A top view of the interior of a control room of an engineering machinery equipment in a specific embodiment of the present invention;

[0032] Figure 4 A schematic diagram of an internal and external circulation regulating air duct and an air-conditioning indoor unit in a specific embodiment of the present invention;

[0033] Figure 5 for Figure 4 The side sectional view AA of the internal and external circulation regulating air duct and the indoor unit of the air conditioner when the damper valve body is in the A position;

[0034] Figure 6 for Figure 4 A side sectional view A'-A' of the internal and external circulation regulating air duct and the air conditioner indoor unit when the damper valve body is in position B.

[0035] Description of reference numerals:

[0036] 100 pressurized oxygen system 200 seats

[0037] 101 Air conditioner indoor unit 102 Engine

[0038] 103 oxygen tank 104 master controller

[0039] 105 External circulation pipeline 106 Internal and external circulation adjustment air duct

[0040] 107 air outlet pipeline 108 air supply pipeline

[0041] 109 atmospheric pressure sensor 110 atmospheric oxygen content sensor

[0042] 111 tube gas pressure sensor 112 tube gas oxygen content sensor

[0043] 113 pipeline air inlet valve body 114 pipeline air outlet valve body

[0044] 115 air valve body 116 oxygen supply valve body

[0045] 102a Engine Controller

[0046] 102b speed sensor 102c injection actuator

[0047] 102d air filter 102e air filter intake pipe

[0048] 102f air filter outlet pipe 102g gas heater

[0049] 106a: air inlet for external circulation of air duct 106b: air inlet for internal circulation of air duct DETAILED DESCRIPTION

[0050] The specific implementation of the embodiment of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the present invention, and is not used to limit the embodiment of the present invention.

[0051] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0052] In the embodiments of the present invention, unless otherwise specified, directional words such as "up, down, top, bottom" are usually used to describe the relative positional relationship of components with respect to the directions shown in the drawings or in the vertical, perpendicular or gravity directions.

[0053] The present invention will be described in detail below in conjunction with exemplary embodiments with reference to the accompanying drawings.

[0054] like Figure 1 and Figure 2 As shown, the first exemplary embodiment of the present invention provides a pressurized oxygen-enhanced system 100 , which mainly includes an air-conditioning indoor unit 101 , an engine 102 and an oxygen tank 103 .

[0055] Specifically, the air conditioner indoor unit 101 includes a fan, an indoor unit air inlet formed on the air inlet side of the fan, and an indoor unit air outlet and an indoor unit air supply outlet formed on the air outlet side of the fan. When the air conditioning function is used, the fan is started, and the airflow entering the air conditioner indoor unit 101 through the indoor unit air inlet undergoes heat exchange (cooling or heating) and then is discharged to the indoor environment through the indoor unit air outlet, thereby adjusting the indoor temperature. For example, an air outlet duct 107 may be provided, with two end ports that can be connected to the indoor environment and the indoor unit air outlet, respectively, so that the air that has undergone heat exchange is discharged to the indoor environment through the air outlet duct 107.

[0056] The engine 102 includes an engine air intake. When the engine 102 is operating, air may enter the interior of the engine 102 from the engine air intake.

[0057] The oxygen tank 103 is used to store oxygen, and includes an oxygen tank outlet that can be connected to the air inlet of the indoor unit. When the oxygen tank outlet and the air inlet of the indoor unit are connected, the oxygen in the oxygen tank 103 can be delivered to the air conditioner indoor unit 101. Whether the oxygen tank outlet is connected to the air inlet of the indoor unit can be achieved by, for example, driving the oxygen supply valve body 116 to open or close.

[0058] In addition, the pressurized oxygen enrichment system 100 is configured to be able to transport the oxygen in the oxygen tank 103 to the air-conditioning indoor unit 101 through the oxygen tank outlet and the indoor unit air inlet, so that the air-conditioning indoor unit 101 transports part of the oxygen to the indoor environment through the indoor unit air outlet and transports part of the oxygen to the engine 102 through the indoor unit air supply outlet and the engine air inlet, so as to pressurize and oxygenate the indoor environment and the engine 102 respectively.

[0059] Through the above-mentioned settings, the pressurized oxygen-enriched system 100 of the exemplary embodiment forms an air path association between the air-conditioning indoor unit 101 and the engine 102, and is equipped with an oxygen tank 103, so that in a low-pressure and low-oxygen environment such as a plateau environment, the system can deliver oxygen in the oxygen tank 103 to the air-conditioning indoor unit 101, and the air-conditioning indoor unit 101 can then divert and deliver oxygen to the indoor environment of the equipment (such as the control room of the engineering machinery equipment) and the engine 102. The supplement of oxygen can not only increase the oxygen content of the air in the indoor environment and the engine 102, but also increase the air pressure, thereby respectively pressurizing and oxygenating the indoor environment of the equipment and the engine 102, ensuring that the engine 102 can start normally, and preventing the operators in the indoor environment from feeling uncomfortable due to the plateau environment, thereby effectively ensuring the normal operation of the equipment and the operators and maintaining their working state.

[0060] It should be noted that a gas heater 102g may be provided at the engine air inlet. When the pressurized and oxygenated gas passes through the engine air inlet, the gas heater 102g can heat the pressurized and oxygenated gas to avoid adverse effects caused by the outdoor low temperature environment.

[0061] On the other hand, by pressurizing the indoor environment of the control room of engineering machinery equipment, the air pressure in the control room can be prevented from being lower than the atmospheric pressure, thereby effectively preventing external dust from entering the control room through the gap of the control room door and accelerating the air pollution in the control room. Especially when the air conditioning internal circulation function is used, the deterioration of the air quality in the control room can be delayed.

[0062] In one embodiment, the pressurized oxygen-enhanced system 100 includes a master controller 104, an atmospheric pressure sensor 109 for detecting atmospheric pressure, and an atmospheric oxygen content sensor 110 for detecting atmospheric oxygen content. The atmospheric pressure sensor 109 and the atmospheric oxygen content sensor 110 communicate with the master controller 104, respectively. The master controller 104 is configured to control the pressurized oxygen-enhanced system 100 to pressurize and oxygenate the indoor environment and the engine 102, respectively, when the atmospheric pressure is lower than a preset safe atmospheric pressure and the atmospheric oxygen content is lower than a preset safe atmospheric oxygen content.

[0063] In other words, the atmospheric pressure sensor 109 can detect the real-time atmospheric pressure, and the atmospheric oxygen content sensor 110 can detect the real-time atmospheric oxygen content. The master controller 104 can obtain the real-time atmospheric pressure information and atmospheric oxygen content information from the atmospheric pressure sensor 109 and the atmospheric oxygen content sensor 110, respectively, and compare the atmospheric pressure with the preset safe atmospheric pressure and the atmospheric oxygen content with the preset safe atmospheric oxygen content. When the master controller 104 determines that the atmospheric pressure is lower than the safe atmospheric pressure and the atmospheric oxygen content is lower than the safe atmospheric oxygen content, it controls the pressurized oxygenation system 100 to deliver the oxygen in the oxygen tank 103 to the air conditioner indoor unit 101, so that the air conditioner indoor unit 101 delivers part of the oxygen to the indoor environment through the indoor unit air outlet and delivers part of the oxygen to the engine 102 through the indoor unit air supply outlet and the engine air inlet, so as to pressurize and oxygenate the indoor environment and the engine 102 respectively.

[0064] The specific values ​​of the above preset safe atmospheric pressure and preset safe atmospheric oxygen content are not limited and can be determined according to actual conditions. Generally, when the atmospheric pressure is less than 80kpa and the atmospheric oxygen content is less than 15%, it can be regarded as being in a plateau environment. At this time, the safe atmospheric pressure can be set to 80kpa and the safe atmospheric oxygen content can be set to 15%.

[0065] In one embodiment, the pressurized oxygenation system 100 includes an air supply pipeline 108 and a pipeline outlet valve body 114 disposed in the air supply pipeline 108, and an air supply pipeline air inlet and an air supply pipeline air outlet are formed at both ends of the air supply pipeline 108. In the process of pressurizing and oxygenating the engine 102, the indoor unit air supply outlet, the air supply pipeline air inlet and the air supply pipeline air outlet are connected in sequence, so that the air conditioner indoor unit 101 can discharge the air flow into the air supply pipeline 108. At this time, if the pipeline outlet valve body 114 is in an open state ( Figure 1 For example, the pipeline outlet valve body 114 is in the dotted line position at this time), the air outlet of the air supply pipeline is connected to the engine air inlet, and the air flow in the air supply pipeline 108 can further flow into the interior of the engine 102. If the pipeline outlet valve body 114 is in the closed state ( Figure 1 In terms of the above, that is, the pipeline outlet valve body 114 is in the solid line position at this time), the pipeline outlet valve body 114 will cut off the connection between the air supply pipeline outlet and the engine air inlet. At this time, even if the indoor unit air supply outlet, the air supply pipeline inlet and the air supply pipeline outlet are connected in sequence, the airflow in the air supply pipeline 108 cannot enter the interior of the engine 102.

[0066] Based on the above configuration, in the initial stage of pressurizing and oxygenating the engine 102, the indoor unit air supply outlet, the air supply pipeline air inlet and the air supply pipeline air outlet can be driven to be connected in sequence, so that the air conditioner indoor unit 101 discharges the air flow into the air supply pipeline 108, and at the same time, the pipeline air outlet valve body 114 is driven to close to cut off the connection between the air supply pipeline air outlet and the engine air inlet, so that the air flow in the air supply pipeline 108 cannot temporarily enter the interior of the engine 102. In this way, when the gas pressure in the air supply pipeline 108 rises to a certain level, the pipeline air outlet valve body 114 can be opened to pass the gas with relatively stable pressure into the interior of the engine 102, so as to enhance the pressurization and oxygenation effect, thereby further improving the success rate of starting the engine 102.

[0067] Generally, when the engine 102 does not need to be started with supercharging and oxygen addition, the air in the atmosphere is processed by the air filter assembly and then passed into the interior of the engine 102 through the engine air intake. Figure 1 The air filter pipe assembly mainly includes an air filter 102d, an air filter inlet pipe 102e and an air filter outlet pipe 102f. When the engine 102 is started, the air in the atmospheric environment will pass through the air filter inlet pipe 102e to be processed in the air filter 102d, and the processed air will pass through the air filter outlet pipe 102f and the engine air intake to the interior of the engine 102.

[0068] exist Figure 1 In the embodiment of, the connection between the air filter outlet pipe 102f and the engine air inlet and the connection between the air supply pipe outlet and the engine air inlet are both realized by changing the position of the pipe outlet valve body 114 which is set as a swingable valve body. Specifically, when the pipe outlet valve body 114 swings around the hinge point to the dotted line position in the figure, the pipe outlet valve body 114 cuts off the connection between the air filter outlet pipe 102f and the engine air inlet, and at the same time, the air supply pipe outlet is connected to the engine air inlet. When the pipe outlet valve body 114 swings around the hinge point to the solid line position in the figure, the pipe outlet valve body 114 cuts off the connection between the air supply pipe outlet and the engine air inlet, and at the same time, the air filter outlet pipe 102f is connected to the engine air inlet. When the pipeline outlet valve body 114 swings around the hinge point to a position between the dotted line and the solid line in the figure, the air filter outlet pipeline 102f and the air supply pipeline outlet are both connected to the engine air intake, and at this time, the pipeline outlet valve body 114 can adjust the flow ratio of the air entering the engine 102 from the atmospheric environment and the gas entering the engine 102 from the air supply pipeline 108.

[0069] In one embodiment, a pipeline air inlet valve body 113 is provided in the air supply pipeline 108. When the pipeline air inlet valve body 113 is in the open state, the indoor unit air supply outlet, the air supply pipeline air inlet and the air supply pipeline air outlet are connected in sequence, and the air flow discharged from the air conditioner indoor unit 101 can enter the air supply pipeline 108. When the pipeline air inlet valve body 113 is in the closed state, the pipeline air inlet valve body 113 at least cuts off the connection between the indoor unit air supply outlet and the air supply pipeline air outlet. When the pipeline air inlet valve body 113 is set at the air supply pipeline air inlet, when the pipeline air inlet valve body 113 is in the closed state, the pipeline air inlet valve body 113 directly cuts off the connection between the indoor unit air supply outlet and the air supply pipeline air inlet. With this arrangement, when there is no need to pressurize and oxygenate the engine 102, the pipeline air intake valve body 113 can be closed, so that the air conditioning indoor unit 101 cannot exhaust air into the air supply pipeline 108, but instead discharges all the airflow into the indoor environment, thereby improving the temperature regulation efficiency of the indoor environment.

[0070] In one embodiment, the pressurized oxygenation system 100 includes a master controller 104, a pipe gas pressure sensor 111 for detecting the gas pressure in the pipe of the air supply pipe 108, and a pipe gas oxygen content sensor 112 for detecting the oxygen content of the gas in the pipe of the air supply pipe 108. Both the pipe gas pressure sensor 111 and the pipe gas oxygen content sensor 112 can be arranged in the air supply pipe 108, and the pipe gas pressure sensor 111 and the pipe gas oxygen content sensor 112 communicate with the master controller 104 respectively. The master controller 104 is configured to: during the process of pressurizing and oxygenating the engine 102, when the gas pressure in the pipe is lower than the preset safe atmospheric pressure and / or the oxygen content of the gas in the pipe is lower than the preset safe atmospheric oxygen content, the pipe outlet valve body 114 is controlled to be closed to cut off the connection between the air outlet of the air supply pipe and the air inlet of the engine.

[0071] In other words, the pipe gas pressure sensor 111 can detect the real-time pipe gas pressure, and the pipe gas oxygen content sensor 112 can detect the real-time pipe gas oxygen content. The master controller 104 can obtain the real-time pipe gas pressure information and pipe gas oxygen content information from the pipe gas pressure sensor 111 and the pipe gas oxygen content sensor 112, respectively, and compare the pipe gas pressure with the preset safe atmospheric pressure and the pipe gas oxygen content with the preset safe atmospheric oxygen content. When the master controller 104 determines that the pipe gas pressure is lower than the safe atmospheric pressure and / or the pipe gas oxygen content is lower than the safe atmospheric oxygen content, the pipeline outlet valve body 114 is controlled to be closed to cut off the connection between the air outlet of the air supply pipeline and the air inlet of the engine, so that before the state of the gas in the air supply pipeline 108 does not meet the preset requirements, the gas in the air supply pipeline 108 cannot temporarily pass into the interior of the engine 102.

[0072] In one embodiment, the master controller 104 is configured to: during the process of pressurizing and oxygenating the engine 102, when the gas pressure in the pipe is not lower than the preset safe atmospheric pressure and the oxygen content of the gas in the pipe is not lower than the preset safe atmospheric oxygen content, the control pipeline outlet valve body 114 is opened to connect the air supply pipeline outlet and the engine air inlet. That is, when the state of the gas in the air supply pipeline 108 has reached the preset requirements, the gas in the air supply pipeline 108 can be passed into the interior of the engine 102, which can ensure the pressurization and oxygenation effect, so that the engine 102 can be started normally.

[0073] In one embodiment, the engine 102 includes an engine controller 102a, and the pipe gas pressure sensor 111 and the pipe gas oxygen content sensor 112 communicate with the engine controller 102a respectively. The engine controller 102a is configured to: when the engine 102 is started under the condition of supercharging and oxygenation, and the air outlet of the air supply pipeline is connected to the engine air inlet, the fuel injection amount of the engine 102 is controlled and adjusted according to the gas pressure in the pipe and the oxygen content of the gas in the pipe. When adjusting the fuel injection amount, it is specifically achieved by controlling the fuel injection actuator 102c in the engine 102. This embodiment can make the fuel injection amount match the gas pressure and gas oxygen content of the supercharging and oxygenation gas introduced into the engine 102 when the engine 102 is started under the condition of supercharging and oxygenation, so as to avoid the influence of too little fuel injection on normal starting.

[0074] In one embodiment, the engine 102 includes an engine controller 102a, a speed sensor 102b for detecting the engine speed, and an air filter assembly capable of connecting the atmosphere and the engine air intake. The speed sensor 102b communicates with the engine controller 102a, and the master controller 104 communicates with the engine controller 102a. The master controller 104 is configured such that when the engine 102 is started under the condition of supercharging and oxygenation and the air outlet of the air supply pipeline is connected to the engine air intake, when the engine speed increases to a value not lower than a preset successful start speed, the control pipeline air outlet valve body 114 is closed to cut off the connection between the air outlet of the air supply pipeline and the engine air intake.

[0075] In other words, when the engine 102 is started under the condition of supercharging and oxygenation, the gas in the air supply pipeline 108 will be passed into the engine 102, and the engine speed will be detected in real time by the speed sensor 102b and fed back to the engine controller 102a. When the engine speed increases to not less than the preset successful start speed, it means that the engine 102 is successfully started and can operate normally without further supercharging and oxygenation. At this time, the engine controller 102a will feed back the successful start signal to the main controller 104, and the main controller 104 will control the pipeline outlet valve body 114 to close to cut off the connection between the air supply pipeline outlet and the engine intake, thereby stopping supercharging and oxygenation of the engine 102. After stopping supercharging and oxygenation, the engine 102 will continue to take in air from the atmospheric environment through the air filter tube assembly, and can also maintain its normal operation.

[0076] In one embodiment, referring to Figure 1 The pressurized oxygenation system 100 also includes an external circulation pipeline 105 with two ends of the pipe openings that can be connected to the atmosphere and the air inlet of the indoor unit. During the pressurized oxygenation process, the oxygen tank outlet is connected to the air inlet of the indoor unit, and the external circulation pipeline 105 is connected to the atmosphere and the air inlet of the indoor unit, so that the air in the atmospheric environment and the oxygen in the oxygen tank 103 can be used for pressurized oxygenation at the same time, so that the pressurized oxygenation effect can be enhanced, and for the indoor environment, fresh air can be introduced to improve the air quality in the indoor environment, which is beneficial to the physical and mental health of the operators.

[0077] In one embodiment, referring to Figures 4 to 6 The pressurized oxygen enrichment system 100 includes an internal and external circulation regulating air duct 106 connected to the air conditioner indoor unit 101, and the internal and external circulation regulating air duct 106 is formed with an air duct outlet connected to the air inlet of the indoor unit and an air duct outer circulation air inlet 106a and an air duct inner circulation air inlet 106b that can be connected to the air duct outlet respectively. Among them, the external circulation pipeline 105 can be connected to the air inlet of the indoor unit through the air duct outer circulation air inlet 106a to pass the air in the atmospheric environment into the air conditioner indoor unit 101. The air duct inner circulation air inlet 106b is connected to the indoor environment, and the air in the indoor environment can enter the air conditioner indoor unit 101 through the air duct inner circulation air inlet 106b and the indoor unit air inlet in sequence.

[0078] Furthermore, the air conditioner indoor unit 101 can be arranged in the horizontal direction, and the internal and external circulation regulating air duct 106 can be arranged to extend upward from one lateral side of the air conditioner indoor unit 101 in an inclined manner, so that the air flow has a small wind resistance when passing from the internal and external circulation regulating air duct 106 into the air conditioner indoor unit 101. In addition, the air duct outer circulation air inlet 106a and the air duct inner circulation air inlet 106b can both be formed at the top end of the internal and external circulation regulating air duct 106, and the air duct outlet can be formed at the bottom end of the internal and external circulation regulating air duct 106, and the top end of the internal and external circulation regulating air duct 106 is provided with a damper valve body 115 capable of adjusting the relative opening of the air duct outer circulation air inlet 106a and the air duct inner circulation air inlet 106b.

[0079] For example, the damper valve body 115 may be configured as a swingable valve body. Figure 1 When the damper valve body 115 swings around the hinge point to the dotted line position in the figure, the damper valve body 115 cuts off the connection between the air duct outer circulation air inlet 106a and the indoor unit air inlet, and the air duct inner circulation air inlet 106b is connected to the indoor unit air inlet. When the damper valve body 115 swings around the hinge point to the solid line position in the figure, the damper valve body 115 cuts off the connection between the air duct inner circulation air inlet 106b and the indoor unit air inlet, and the air duct outer circulation air inlet 106a is connected to the indoor unit air inlet. When the damper valve body 115 swings around the hinge point to a position between the dotted line and the solid line in the figure, the duct outer circulation air inlet 106a and the duct inner circulation air inlet 106b are both connected to the indoor unit air inlet, and at this time, the damper valve body 115 can adjust the flow ratio of the air entering the indoor unit air inlet from the duct outer circulation air inlet 106a and the air entering the indoor unit air inlet from the duct inner circulation air inlet 106b.

[0080] Or, refer to Figure 5 and Figure 6 When the damper valve body 115 swings around the hinge point to the position A in the figure, the damper valve body 115 cuts off the connection between the air duct outer circulation air inlet 106a and the indoor unit air inlet, and the air duct inner circulation air inlet 106b is connected to the indoor unit air inlet. When the damper valve body 115 swings around the hinge point to the position B in the figure, the air duct outer circulation air inlet 106a is connected to the indoor unit air inlet, and a part of the air duct inner circulation air inlet 106b is connected to the indoor unit air inlet. When the damper valve body 115 swings around the hinge point to a position between the position A and the position B in the figure, the air duct outer circulation air inlet 106a and the air duct inner circulation air inlet 106b are both connected to the indoor unit air inlet, and at this time, the damper valve body 115 can adjust the wind resistance ratio of the air passing from the air duct outer circulation air inlet 106a into the indoor unit air inlet and the air passing from the air duct inner circulation air inlet 106b into the indoor unit air inlet.

[0081] An optional embodiment of a fully automatic assisted engine start and an optional embodiment of a semi-automatic assisted engine start of the pressurized oxygen system 100 in a plateau environment are described below to more clearly illustrate the working principle of the assisted engine start of the pressurized oxygen system 100.

[0082] In an alternative embodiment of a fully automatic assisted engine start, refer to Figure 2 , follow these steps in order:

[0083] 1. An operator in an indoor environment turns the key to start the engine 102. If the atmospheric pressure sensor 109 detects that the atmospheric pressure is less than 80 kPa and the atmospheric oxygen content sensor 110 detects that the atmospheric oxygen content is less than 15%, the main controller 104 determines that the current working environment of the pressurized oxygen system 100 is a plateau environment, and immediately sends a corresponding signal to the engine controller 102a, so that the engine controller 102a temporarily does not control the execution of actions related to starting the engine 102.

[0084] 2. When the master controller 104 sends a corresponding signal to the engine controller 102a so that the engine controller 102a temporarily stops controlling the execution of actions related to starting the engine 102, the master controller 104 controls the damper valve body 115 to move so that the outer circulation air inlet 106a of the inner and outer circulation regulating air duct 106 is connected to the air inlet of the indoor unit, and the connection between the inner circulation air inlet 106b of the air duct and the air inlet of the indoor unit is cut off. In addition, the master controller 104 controls the oxygen supply valve body 116 to open so that the oxygen tank outlet is connected to the indoor unit inlet. Furthermore, the master controller 104 controls the pipeline air inlet valve body 113 to open and the pipeline air outlet valve body 114 to move so that the indoor unit outlet, the air inlet of the air supply pipeline 108, and the air outlet of the air supply pipeline 108 are connected in sequence and the air outlet of the air supply pipeline 108 is temporarily disconnected from the engine air inlet.

[0085] 3. The main controller 104 controls the fan of the air-conditioning indoor unit 101 to start.

[0086] 4. When the in-pipe gas pressure detected by the pipe gas pressure sensor 111 is greater than or equal to 80 kPa and the in-pipe gas oxygen content detected by the pipe gas oxygen content sensor 112 is greater than or equal to ≥15%, the master controller 104 determines that the state of the pressurized and oxygenated gas in the air supply pipeline 108 meets the start-up requirements of the engine 102, and then controls the pipeline outlet valve body 114 to move again, so that the outlet of the air supply pipeline 108 is connected to the engine air inlet and the air filter outlet pipeline 102f is not connected to the engine air inlet. At the same time, the master controller 104 sends a corresponding signal to the engine controller 102a, so that the engine controller 102a starts to control and execute actions related to starting the engine 102.

[0087] 5. The engine controller 102a adjusts the real-time fuel injection amount of the fuel injection actuator 102c according to the gas pressure in the pipe detected by the pipe gas pressure sensor 111 and the oxygen content in the pipe gas detected by the pipe gas oxygen content sensor 112.

[0088] 6. The speed sensor 102b detects the engine speed in real time. When the engine speed is greater than 800 rpm, the engine controller 102a determines that the engine 102 is successfully started, and feeds back a corresponding signal to the master controller 104. The master controller 104 then controls the movement of each valve body to reset to the initial position. At this point, the fully automatic auxiliary engine start process ends.

[0089] In an optional embodiment of semi-automatic assisted engine starting, the following steps may be performed in sequence:

[0090] 1. When the atmospheric pressure sensor 109 detects that the atmospheric pressure is less than 80 kPa and the atmospheric oxygen content sensor 110 detects that the atmospheric oxygen content is less than 15%, the main controller 104 determines that the current working environment of the pressurized oxygen system 100 is a plateau environment, and immediately sends a corresponding signal to the control panel set in the indoor environment, so that the touch screen on the control panel displays "Do you want to start the plateau startup program?" and two selection buttons of "Yes" and "No".

[0091] 2. The operator in the indoor environment manually clicks the “Yes” button, and the control panel feeds back the corresponding signal to the main controller 104 , which then controls the pressurization and oxygenation system 100 to perform the pressurization and oxygenation action on the engine 102 .

[0092] 3. The master controller 104 controls the damper valve body 115 to move so that the outer circulation air inlet 106a of the inner and outer circulation regulating air duct 106 is connected to the air inlet of the indoor unit, and at the same time cuts off the connection between the inner circulation air inlet 106b of the air duct and the air inlet of the indoor unit. In addition, the master controller 104 controls the oxygen supply valve body 116 to open so that the oxygen tank outlet is connected to the indoor unit air inlet. Furthermore, the master controller 104 controls the pipeline air inlet valve body 113 to open and the pipeline air outlet valve body 114 to move so that the indoor unit outlet, the air inlet of the air supply pipeline 108, and the air outlet of the air supply pipeline 108 are connected in sequence and the air outlet of the air supply pipeline 108 is temporarily disconnected from the engine air inlet.

[0093] 4. The main controller 104 controls the fan of the air-conditioning indoor unit 101 to start.

[0094] 5. When the in-pipe gas pressure detected by the pipe gas pressure sensor 111 is greater than or equal to 80 kPa and the in-pipe gas oxygen content detected by the pipe gas oxygen content sensor 112 is greater than or equal to ≥15%, the main controller 104 determines that the state of the pressurized and oxygenated gas in the air supply pipeline 108 meets the starting requirements of the engine 102, and then feeds back the corresponding signal to the control panel, so that the touch screen on the control panel displays the reminder "The pressurization and oxygenation of the air supply pipeline are completed, please start the engine".

[0095] 6. The operator turns the key to start the engine 102. While starting the engine 102, the master controller 104 controls the pipeline outlet valve body 114 to move again, so that the outlet of the air supply pipeline 108 is connected to the engine air inlet and the air filter outlet pipeline 102f is not connected to the engine air inlet. In addition, the engine controller 102a adjusts the real-time injection amount of the injection actuator 102c according to the gas pressure in the pipeline detected by the pipeline gas pressure sensor 111 and the oxygen content in the pipeline detected by the pipeline gas oxygen content sensor 112.

[0096] 7. The speed sensor 102b detects the engine speed in real time. When the engine speed is greater than 800 rpm, the engine controller 102a determines that the engine 102 is successfully started, and feeds back a corresponding signal to the master controller 104. The master controller 104 then controls the movement of each valve body to reset to the initial position. At this point, the semi-automatic auxiliary engine start process ends.

[0097] The second exemplary embodiment of the present invention further provides an engineering machinery equipment, which includes the above-mentioned pressurization and oxygenation system 100. Obviously, the engineering machinery equipment of this exemplary embodiment has all the technical effects brought by the above-mentioned pressurization and oxygenation system 100, so it will not be repeated here.

[0098] The engineering machinery equipment of this exemplary embodiment uses the engine 102 as the power source of the work execution mechanism and / or the travel power source, and the equipment is also provided with a control room (i.e. the aforementioned indoor environment). For example, the engineering machinery equipment of this exemplary embodiment can be different types of equipment such as an excavator, a pump truck, and a crane.

[0099] In one embodiment, referring to Figure 3, a seat 200 is provided in the control room of the engineering machinery equipment. At this time, if the pressurized oxygen enrichment system 100 is provided with an internal and external circulation regulating air duct 106, the internal circulation air inlet 106b of the internal and external circulation regulating air duct 106 can be arranged in front of the seat 200 and facing the seat 200. Compared with the existing air conditioning internal circulation air inlet arranged behind the seat with a small spacing, the internal circulation air inlet 106b of the internal and external circulation regulating air duct 106 is not blocked by the seat 200, and the wind resistance of the air inlet is greatly reduced, thereby greatly increasing the air intake volume of the internal circulation air inlet 106b of the internal and external circulation regulating air duct 106 and the air outlet volume of the air duct outlet, which is conducive to improving the temperature regulation speed of the control room by the air conditioner.

[0100] The optional implementation modes of the embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above implementation modes. Within the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical scheme of the embodiments of the present invention, and these simple modifications all belong to the protection scope of the embodiments of the present invention.

[0101] It should also be noted that the various specific technical features described in the above specific implementation methods can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the embodiments of the present invention will not further describe various possible combinations.

[0102] In addition, various implementation modes of the embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the embodiments of the present invention, they should also be regarded as the contents disclosed by the embodiments of the present invention.

Claims

1. A pressurization and oxygenation system for engineering machinery and equipment, characterized in that: The pressurized and oxygenated system (100) comprises: An air conditioner indoor unit (101) comprises a fan, an indoor unit air inlet formed on an air inlet side of the fan, and an indoor unit air outlet and an indoor unit air supply outlet formed on an air outlet side of the fan; An engine (102), including an engine air intake; An oxygen tank (103), comprising an oxygen tank outlet capable of communicating with an air inlet of the indoor unit; and An external circulation pipeline (105), wherein the two end openings of the external circulation pipeline (105) are respectively capable of being connected to the atmosphere and the air inlet of the indoor unit, and an atmospheric pressure sensor (109) for detecting atmospheric pressure and an atmospheric oxygen content sensor (110) for detecting atmospheric oxygen content are provided in the pipeline; When the atmospheric pressure is lower than a preset safe atmospheric pressure and the atmospheric oxygen content is lower than a preset safe atmospheric oxygen content, the air conditioner indoor unit (101) can respectively introduce gas from the external circulation pipeline (105) and the oxygen tank (103) and divert the gas through the indoor unit air outlet and the indoor unit air supply outlet to the indoor environment of the engineering machinery equipment and the engine (102), so as to increase the pressure and oxygen of the indoor environment and the engine (102) respectively; The pressurized oxygen enrichment system (100) further comprises an internal and external circulation regulating air duct (106), wherein the internal and external circulation regulating air duct (106) is connected to the air conditioner indoor unit (101), and the internal and external circulation regulating air duct (106) is formed with an air duct outlet connected to the air inlet of the indoor unit, and an air duct outer circulation air inlet (106a) and an air duct inner circulation air inlet (106b) respectively connectable to the air duct outlet, and the external circulation pipeline (105) can be connected to the air inlet of the indoor unit through the air duct outer circulation air inlet (106a); The air conditioner indoor unit (101) is arranged in a horizontal direction, and the internal and external circulation regulating air duct (106) is arranged to extend upwardly and obliquely from one lateral side of the air conditioner indoor unit (101), and the top end of the internal and external circulation regulating air duct (106) is formed with the air duct external circulation air inlet (106a) and the air duct internal circulation air inlet (106b), and the bottom end of the internal and external circulation regulating air duct (106) is formed with the air duct outlet, and the top end of the internal and external circulation regulating air duct (106) is provided with a damper valve body (115) capable of adjusting the relative opening of the air duct external circulation air inlet (106a) and the air duct internal circulation air inlet (106b), and the damper valve body (115) is configured as a swingable valve body.

2. The pressurization and oxygenation system for engineering machinery equipment according to claim 1 is characterized in that: The pressurized oxygen enrichment system (100) further comprises a master controller (104), the atmospheric pressure sensor (109) and the atmospheric oxygen content sensor (110) respectively communicating with the master controller (104), and the master controller (104) is configured as follows: When the atmospheric pressure is lower than the safe atmospheric pressure and the atmospheric oxygen content is lower than the safe atmospheric oxygen content, the pressurization and oxygenation system (100) is controlled to pressurize and oxygenate the indoor environment and the engine (102) respectively.

3. The pressurization and oxygenation system for engineering machinery equipment according to claim 1 is characterized in that: The pressurized oxygen enrichment system (100) further comprises an air supply pipeline (108) and a pipeline air outlet valve body (114) arranged in the air supply pipeline (108), and an air supply pipeline air inlet and an air supply pipeline air outlet are respectively formed at two ends of the air supply pipeline (108); In the process of pressurizing and oxygenating the engine (102), the indoor unit air supply outlet, the air supply pipeline inlet and the air supply pipeline outlet are connected in sequence; when the pipeline outlet valve body (114) is in an open state, the air supply pipeline outlet is connected to the engine air supply outlet; when the pipeline outlet valve body (114) is in a closed state, the pipeline outlet valve body (114) cuts off the connection between the air supply pipeline outlet and the engine air supply outlet.

4. The pressurization and oxygenation system for engineering machinery equipment according to claim 3 is characterized in that: The pressurized oxygen enrichment system (100) further comprises a master controller (104), a pipe gas pressure sensor (111) for detecting the gas pressure in the pipe of the air supply pipe (108), and a pipe gas oxygen content sensor (112) for detecting the oxygen content of the gas in the pipe of the air supply pipe (108), wherein the pipe gas pressure sensor (111) and the pipe gas oxygen content sensor (112) are respectively in communication with the master controller (104), and the master controller (104) is configured as follows: During the process of pressurizing and oxygenating the engine (102), when the gas pressure in the pipe is lower than the safe atmospheric pressure and / or the oxygen content of the gas in the pipe is lower than the safe atmospheric oxygen content, the pipeline outlet valve body (114) is controlled to close to cut off the connection between the air outlet of the air supply pipeline and the air inlet of the engine.

5. The pressurization and oxygenation system for engineering machinery equipment according to claim 3 is characterized in that: The pressurized oxygen enrichment system (100) further comprises a master controller (104), a pipe gas pressure sensor (111) for detecting the gas pressure in the pipe of the air supply pipe (108), and a pipe gas oxygen content sensor (112) for detecting the oxygen content of the gas in the pipe of the air supply pipe (108), wherein the pipe gas pressure sensor (111) and the pipe gas oxygen content sensor (112) are respectively in communication with the master controller (104), and the master controller (104) is configured as follows: During the process of pressurizing and oxygenating the engine (102), when the gas pressure in the pipe is not lower than the safe atmospheric pressure and the oxygen content of the gas in the pipe is not lower than the safe atmospheric oxygen content, the pipeline outlet valve body (114) is controlled to open to connect the air supply pipeline outlet and the engine air inlet.

6. The pressurization and oxygenation system for engineering machinery equipment according to claim 5, characterized in that: The engine (102) further comprises an engine controller (102a), the pipe air pressure sensor (111) and the pipe air oxygen content sensor (112) respectively communicate with the engine controller (102a), and the engine controller (102a) is configured as follows: When the engine (102) is started under the condition of supercharging and oxygenation and the air outlet of the air supply pipeline is connected to the air inlet of the engine, the fuel injection amount of the engine (102) is controlled and adjusted according to the gas pressure in the pipe and the oxygen content of the gas in the pipe.

7. The pressurization and oxygenation system for engineering machinery equipment according to claim 5, characterized in that: The engine (102) further comprises an engine controller (102a), a speed sensor (102b) for detecting the engine speed, and an air filter pipe assembly capable of connecting the atmosphere and the engine air intake, the speed sensor (102b) and the master controller (104) respectively communicating with the engine controller (102a), and the master controller (104) is configured as follows: When the engine (102) is started under the condition of supercharging and oxygenation and the air outlet of the air supply pipeline is connected to the air inlet of the engine, when the engine speed increases to a value not lower than a preset successful starting speed, the pipeline air outlet valve body (114) is controlled to close to cut off the connection between the air outlet of the air supply pipeline and the air inlet of the engine.

8. The pressurization and oxygenation system for engineering machinery equipment according to claim 3 is characterized in that: A pipeline air inlet valve body (113) is also provided in the air supply pipeline (108); when the pipeline air inlet valve body (113) is in an open state, the indoor unit air supply outlet, the air supply pipeline air inlet and the air supply pipeline air outlet are connected in sequence; when the pipeline air inlet valve body (113) is in a closed state, the pipeline air inlet valve body (113) at least cuts off the connection between the indoor unit air supply outlet and the air supply pipeline air outlet.

9. An engineering machinery equipment, characterized in that: The engineering machinery equipment comprises the pressurization and oxygen enrichment system (100) for engineering machinery equipment according to any one of claims 1 to 8.

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